La*cin"i*a (?), n.; pl. L.
Laciniæ (#). [L., the lappet or flap of a
garment.] 1. (Bot.) (a)
One of the narrow, jagged, irregular pieces or divisions which
form a sort of fringe on the borders of the petals of some
flowers. (b) A narrow, slender portion of
the edge of a monophyllous calyx, or of any irregularly incised
leaf.
2. (Zoöl.) The posterior, inner
process of the stipes on the maxillæ of insects.