LEAF, n. plu. leaves.1. In botany, leaves are organs of perspiration and inhalation in plants. They usually shoot from the sides of the stems and branches, but sometimes from the root; sometimes they are sessile; more generally supported by petioles. They are of various forms, flat, extended, linear, cylindric, &c.2. The thin, extended part of a flower; a petal.3. A part of a book containing two pages.4. The side of a double door. 1Kings 6.5. Something resembling a leaf in thinness and extension; a very thin plate; as gold leaf.6. The movable side of a table.
LEAF, v.i. To shoot out leaves; to produce leaves. The trees leaf in May.