trees

Noun

tree (plural trees or (obsolete) treen)

1. A perennial woody plant taller and larger than a shrub with a wooden trunk and, at some distance from the ground, having leaves and branches.
   • Hyperion is the tallest living tree in the world.
2. Any other plant (such as a large shrub or herb) that is reminiscent of the above in form and size.
   • The banana tree is a tall perennial herb: its trunk is not woody.
3. An object made from a tree trunk and having multiple hooks or storage platforms.
   • He had the choice of buying a scratching post or a cat tree.
4. A device used to hold or stretch a shoe open.
   • He put a shoe tree in each of his shoes.
5. The structural frame of a saddle.
6. A connected graph with no cycles or, if the graph is finite, equivalently a connected graph with n vertices and n−1 edges.

See all 20 meanings of tree