noun
A dense uncultivated tract of trees and undergrowth, larger than woods.
Any dense collection or amount.
(historical) A defined area of land set aside in England as royal hunting ground or for other privileged use; all such areas.
(graph theory) A graph with no cycles; i.e., a graph made up of trees.
(computing, Microsoft Windows) A group of domains that are managed as a unit.
(uncountable) The color forest green.
verb
(transitive) To cover an area with trees.