Dictionary.com
Thesaurus.com
Synonyms

birds

Cultural  

  1. A class of vertebrates distinguished by their feathers and their two legs and two wings. Birds are warm-blooded animals, and their young hatch from eggs.

Discover More

Some scientists argue that modern birds are descended from the dinosaurs.

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.

Classic episodes of series including "Planet Earth II" and "Blue Planet II" are being reshown along with others such as "Life in the Freezer" and "Paradise Birds" available on the BBC's iPlayer service.

From Barron's • May 6, 2026

Within months the soldiers were building their own drones and attaching munitions, and soon became renowned as 414th Brigade, the Birds of Magyar.

From BBC • Apr. 27, 2026

Birds, including curlews and geese also use the reservoir and there are fears that their habitat has also been disturbed.

From BBC • Apr. 19, 2026

Seidl and the Maui Forest Bird Recovery Project are members of Birds, Not Mosquitoes, a collaboration of academic, state, federal, non-profit and industry partners working to advance mosquito control in support of Hawaiian bird conservation.

From Science Daily • Feb. 11, 2026

Birds, startled, rose from tree branches and disappeared into the dark sky.

From "We'll Fly Away" by Bryan Bliss

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.