Definition of tree
(Entry 1 of 2)
1a
: a woody perennial plant having a single usually elongate main stem generally with few or no branches on its lower part
b
: a shrub or herb of arborescent form
rose trees a banana tree
2
: something in the form of or resembling a tree: such as
a
: a diagram or graph that branches usually from a simple stem or vertex without forming loops or polygons
a genealogical tree phylogenetic trees
b
: a much-branched system of channels especially in an animal body
the vascular tree
3a(1)
: a piece of wood (such as a post or pole) usually adapted to a particular use or forming part of a structure or implement
(2)
archaic
: the cross on which Jesus was crucified
4
: saddletree
tree
verb
treed; treeing
Definition of tree (Entry 2 of 2)
1a
: to drive to or up a tree
treed by a bull dogs treeing game
2
: to furnish or fit (a shoe) with a tree
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Merriam-Webster unabridged
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Time Traveler for tree
The first known use of tree was before the 12th century
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