1. noun /tɹiː,tʃɹiː/
a) A large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).
is the tallest living tree in the world.
b) Any plant that is reminiscent of the above but not classified as a tree in the strict botanical sense: for example the banana "tree".
Birds have a nest in a tree in the garden.
See Also: almond tree, apple tree, ash tree, b-tree, binary tree, bodhi tree, boron tree, box tree, cat tree, caterpillar tree, Charlie Brown tree, chaste tree, cherry tree, chestnut tree, chocolate tree, Christmas tree, clothes tree, coat tree, coral tree, cow-tree, cumball tree, dead tree, decision tree, dragon tree, family tree, flame tree, fruit tree, gum tree, hat tree, hedge tree, jellyfish tree, Joshua tree, Judas tree, lemon tree, money doesnt grow on trees, money tree, oak tree, olive tree, order tree, palm tree, pear tree, pencil tree, pine tree, plum tree, rain tree, regression tree, rubber tree, saddle tree, search tree, see the forest for the trees, service tree, shoe tree, skill tree, strawberry tree, sulphur tree, tea tree, technology tree, treebark, treebound, treecreeper, tree farm, tree frog, suffix tree, tree fern, treehood, tree house, treehouse, treehugger, treeify, tree kangaroo, tree kingfisher, tree lawn, treelength, treeless, treelike, treeline, treeman, tree of heaven, tree pangolin, tree pipit, treeplank, tree rat, tree sap, treescape, tree shrew, tree traversal, treetrunk, treewidth, tulip tree, tung tree, Yule tree
2. verb /tɹiː,tʃɹiː/
To chase (an animal or person) up a tree.
The dog treed the cat.
Wikipedia foundation.