a plant having a permanently woody main stem or trunk, ordinarily growing to a considerable height, and usually developing branches at some distance from the ground.
any of various shrubs, bushes, and plants, as the banana, resembling a tree in form and size.
something resembling a tree in shape, as a clothes tree or a crosstree.
Mathematics, Linguistics. tree diagram.
a pole, post, beam, bar, handle, or the like, as one forming part of some structure.
a saddletree.
a treelike group of crystals, as one forming in an electrolytic cell.
a gallows or gibbet.
the cross on which Christ was crucified.
Computers. a data structure organized like a tree whose nodes store data elements and whose branches represent pointers to other nodes in the tree.
to drive into or up a tree, as a pursued animal or person.
Informal. to put into a difficult position.
to stretch or shape on a tree, as a boot.
to furnish (a structure) with a tree.
any large woody perennial plant with a distinct trunk giving rise to branches or leaves at some distance from the ground
any plant that resembles this but has a trunk not made of wood, such as a palm tree
a wooden post, bar, etc
chem a treelike crystal growth; dendrite
a branching diagrammatic representation of something, such as the grammatical structure of a sentence
( as modifier )
a tree diagram
an archaic word for gallows
archaic the cross on which Christ was crucified
in the highest position of a profession, etc
informal in a difficult situation; trapped or stumped
to drive or force up a tree
to shape or stretch (a shoe) on a shoetree
First recorded before 900; Middle English; Old English trēo(w); cognate with Old Frisian, Old Norse trē, Old Saxon treo, Gothic triu; akin to Greek drŷs “oak,” Sanskrit, Avestan dru “wood”
A tree is a large plant with a trunk, branches, and leaves. If you have an apple tree in your backyard, you'll have apples in the fall — and a nice shady place to sit in the summer. The thick, woody trunk is actually the stem of a tree, and its ability to grow so much taller than other plants evolved partly as a way for trees to absorb more sunlight. Trees do a lot for humans, including providing oxygen, giving us places to climb, producing fruit, shading us, and providing lumber and fuel. As a verb, tree means "chase into a tree," the way your dog might tree the neighbor's cat.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The answers she found are powerful, like an enzyme to treat HIV that was found in a tree that was discovered because a researcher spoke Samoan.
From Los Angeles Times • Jul. 2, 2026
Even a swooping hawk couldn’t resist perching on a tree overlooking the makeshift stage.
From Los Angeles Times • Jul. 1, 2026
“Every item on the tree carries a story. Most are happy, some more sobering,” the Alabama woman says.
From The Wall Street Journal • Jul. 1, 2026
Thousands tuned in to a popular livestream set up by Friends of Big Bear Valley, to watch the juvenile eagle, nicknamed Luna, flap its wings and glide to a nearby tree for the first time.
From BBC • Jun. 30, 2026
Clare retreated so as not to spook her, clutching the fallen tree.
From "The Undead Fox of Deadwood Forest" by Aubrey Hartman
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.
