any of the flat, thin, expanded organs, usually green, growing laterally from the stem or twig of a plant: it usually consists of a broad blade, a petiole, or stalk, and stipules and is involved in the processes of photosynthesis and transpiration
in popular usage
the blade of a leaf
a petal
leaves collectively: choice tobacco leaf
a design resembling a leaf, used as an ornament in architecture
a sheet of paper, esp. as part of a book, with a page on each side
a very thin sheet of metal; lamina
such sheets collectively: covered with gold leaf
a hinged section of a table top, forming an extension when raised into place
a board inserted into a table top to increase its surface
a flat, hinged or movable part of a folding door, shutter, etc.
☆ one of a number of metal strips laid one upon another to make a leaf spring
intransitive verb
to put forth or bear leaves: often with out
to turn the pages of a book, etc., esp. so as to glance quickly (through)