\La*cin"i*a\, n.; pl. L. {Lacini[ae]}. [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. (Zo["o]l.) The posterior, inner process of the stipes on
   the maxill[ae] of insects.