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.

family tree.

a pole, post, beam, bar, handle, or the like, as one forming part of some structure.

a shoetree or boot tree.

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.

Christmas 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. ?

up a tree

Informal . in a difficult or embarrassing situation; at a loss; stumped.

noun

forest , hardwood , pulp , sapling , seedling , shrub , softwood , stock , timber , wood , woodsnotes:bush and shrub are used interchangeably for relatively low woody perennials with many stems and branches that grow from a complex close to the ground; a tree is a woody perennial , usually taller , with branches starting higher up , (small) staddle , (with top cut off) pollard , (young) sapling , alder , arboretum , ash , banyan , beech , birch , bolling , boscage , carob , cedar , conifer , coppice , copse , corner , deciduous , elder , elm , evergreen , fir , lin , locust , magnolia , maple , oak , palm , pine , red oak , silva , spinney