<p><strong>Noun</strong></p><ul><li>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</li><li>any of various shrubs, bushes, and plants, as the banana, resembling a tree in form and size</li><li>something resembling a tree in shape, as a clothes tree or a crosstree</li><li>Mathematics, Linguistics. tree diagram</li><li>family tree</li><li>a pole, post, beam, bar, handle, or the like, as one forming part of some structure</li><li>a shoetree or boot tree</li><li>a saddletree</li><li>a treelike group of crystals, as one forming in an electrolytic cell</li><li>a gallows or gibbet</li><li>the cross on which Christ was crucified</li><li>Computers. a data structure organized like a tree whose nodes store data elements and whose branches represent pointers to other nodes in the tree</li><li>Christmas tree</li></ul><p><strong>Verb</strong></p><ul><li>to drive into or up a tree, as a pursued animal or person</li><li>Informal. to put into a difficult position</li><li>to stretch or shape on a tree, as a boot</li><li>to furnish (a structure) with a tree</li></ul>