from
The Collaborative International Dictionary of English v.0.48
Lacinia \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.
[1913 Webster]
2. (Zool.) The posterior, inner process of the stipes on the
maxill[ae] of insects.
[1913 Webster] Laciniate