Tree Houses Hotel Costa Rica. Web in botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. Compilers use a syntax tree to validate the syntax of every program.

The roots of a tree are usually under the ground. [noun] a woody perennial plant having a single usually elongate main stem generally with few or no branches on its lower part. A modified version of a tree called tries is used in modern routers to store routing information.

