bird
1 Americannoun
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birds
plural
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any warm-blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard-shelled egg.
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a fowl or game bird.
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Sports.
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a shuttlecock.
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Slang. a person, especially one having some peculiarity.
He's a queer bird.
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Informal. an aircraft, spacecraft, or guided missile.
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Cooking. a thin piece of meat, poultry, or fish rolled around a stuffing and braised.
veal birds.
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Southern U.S. (in hunting) a bobwhite.
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Chiefly British Slang. a girl or young woman.
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Archaic. the young of any fowl.
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Slang. the bird,
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disapproval, as of a performance, by hissing, booing, etc..
He got the bird when he came out on stage.
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scoffing or ridicule.
He was trying to be serious, but we all gave him the bird.
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an obscene gesture of contempt made by raising the middle finger.
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verb (used without object)
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to catch or shoot birds.
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to bird-watch.
idioms
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bird in the hand, a thing possessed in fact as opposed to a thing about which one speculates: Also bird in hand.
A bird in the hand is worth two in the bush.
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birds of a feather, people with interests, opinions, or backgrounds in common.
Birds of a feather flock together.
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for the birds, useless or worthless; not to be taken seriously.
Their opinions on art are for the birds. That pep rally is for the birds.
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the birds and the bees, basic information about sex and reproduction.
It was time to talk to the boy about the birds and the bees.
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a little bird, a secret source of information.
A little bird told me that today is your birthday.
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kill two birds with one stone, to achieve two aims with a single effort.
She killed two birds with one stone by shopping and visiting the museum on the same trip.
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eat like a bird, to eat sparingly.
She couldn't understand why she failed to lose weight when she was, as she said, eating like a bird.
noun
noun
noun
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any warm-blooded egg-laying vertebrate of the class Aves , characterized by a body covering of feathers and forelimbs modified as wings. Birds vary in size between the ostrich and the humming bird
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informal a person (usually preceded by a qualifying adjective, as in the phrases rare bird, odd bird, clever bird )
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slang a girl or young woman, esp one's girlfriend
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slang prison or a term in prison (esp in the phrase do bird ; shortened from birdlime , rhyming slang for time )
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something definite or certain
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informal the person in question has fled or escaped
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euphemistic sex and sexual reproduction
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people with the same characteristics, ideas, interests, etc
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informal
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to be fired or dismissed
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(esp of a public performer) to be hissed at, booed, or derided
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informal to tell someone rudely to depart; scoff at; hiss
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to accomplish two things with one action
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without resistance or difficulty
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a (supposedly) unknown informant
a little bird told me it was your birthday
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informal deserving of disdain or contempt; not important
Closer Look
It is generally believed that birds are descended from dinosaurs and probably evolved from them during the Jurassic Period. While most paleontologists believe that birds evolved from a small dinosaur called the theropod, which in turn evolved from the thecodont, a reptile from the Triassic Period, other paleontologists believe that birds and dinosaurs both evolved from the thecodont. There are some who even consider the bird to be an actual dinosaur. According to this view, the bird is an avian dinosaur, and the older dinosaur a nonavian dinosaur. Although there are variations of thought on the exact evolution of birds, the similarities between birds and dinosaurs are striking and undeniable. Small meat-eating dinosaurs and primitive birds share about twenty characteristics that neither group shares with any other kind of animal; these include tubular bones, the position of the pelvis, the shape of the shoulder blades, a wishbone-shaped collarbone, and the structure of the eggs. Dinosaurs had scales, and birds have modified scales—their feathers—and scaly feet. Some dinosaurs also may have had feathers; a recently discovered fossil of a small dinosaur indicates that it had a featherlike covering. In fact, some primitive fossil birds and small meat-eating dinosaurs are so similar that it is difficult to tell them apart based on their skeletons alone.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of bird
First recorded before 900; Middle English byrd, bryd, Old English brid(d) (Northumbrian dialect bird ) “young bird, chick”
Explanation
A bird is an animal with wings, feathers, and two legs. Birds, from chickens to crows, are also warm-blooded and lay eggs. Most birds can fly using their wings, and when you visit the coast you'll see various sea birds like gulls, terns, and cormorants. You can use the word bird as a verb meaning "to observe birds as a hobby," and in some places, particularly Britain, it's also a noun meaning "young woman." Bird is an Old English word, an unusual form of bridd, "young bird or fledgling," from an unknown origin.
Vocabulary lists containing bird
Animals (Zoology) - Introductory
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Animals (Zoology) - Middle School
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Animals (Zoology) - High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
"They like the nice grassy slopes and the burrows have already been dug out for them by rabbits and Manx shearwaters, which is our star bird on the island."
From BBC ● Aug. 15, 2026
The room was on the 15th floor or something, and I guess the bird had flown into the glass.
From Los Angeles Times ● Aug. 14, 2026
It didn’t explicitly say investigators believe a bird strike led to the engine fan blade fracturing.
From The Wall Street Journal ● Aug. 13, 2026
Pointing out the perfect V formation, Ferguson would tell his players that each bird would take its turn to lead from the front as they embarked on a 4,000-mile migration in the winter.
From BBC ● Aug. 13, 2026
His clothes were finely made and colorful, his jerkin and leggings stitched in braided sinew dyed red, and edged in some kind of bird skin stained green.
From "Wolf Brother" by Michelle Paver
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Adam Ringland of Copeland Island Bird Observatory which is based on Lighthouse Island said the puffins are thriving due to the environment.
From BBC ● Aug. 15, 2026
Amid the scrutiny, Polymarket is revamping its marketing leadership, recently hiring Bird founder Travis VanderZanden as head of growth.
From The Wall Street Journal ● Aug. 12, 2026
Even after stints on the East Coast for art school and in San Francisco for a restaurant gig at Michelin-starred State Bird Provisions, she felt the pull to return to Chinatown.
From Los Angeles Times ● Aug. 4, 2026
Bird communities at more extreme latitudes, where seasonal temperatures vary more sharply, tend to include species that evolve faster than those living closer to the equator.
From Science Daily ● Jul. 30, 2026
“I shouldn’t. I’ve got to get back or the Bird will suspect us.”
From "Miss Peregrine's Home for Peculiar Children" by Ransom Riggs
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“I like hearing my birds sing,” he said.
From The Wall Street Journal ● Aug. 16, 2026
She pointed to news of road construction crews digging deeper and deeper into Brazil’s Amazon forest, which she said will inevitably “bring us into contact with birds and bugs” and the disease-baggage they carry.
From Los Angeles Times ● Aug. 16, 2026
They eat crustaceans, birds and fish and grow to be up to about four feet long and 32 pounds.
From Los Angeles Times ● Aug. 15, 2026
On the other side of the island is the Unesco-designated Hara Biosphere Reserve, home to vital habitats for marine life and migratory birds.
From BBC ● Aug. 14, 2026
Each day, Father Monaghan finds some modicum of peace in nature: the singing of morning birds, the distant crowing of roosters, the sun shining through mango trees.
From "At Last She Stood" by Erin Entrada Kelly
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.