to destroy or cause widespread loss of leaves in (an area of jungle, forest, etc.), as by using chemical sprays or incendiary bombs, in order to deprive enemy troops or guerrilla forces of concealment.
to lose leaves.
(of a tree) having lost its leaves, especially by a natural process.
to deprive (a plant) of its leaves, as by the use of a herbicide, or (of a plant) to shed its leaves