Pli"ca (?), n. [LL., a fold, fr. L. plicare to fold. See Ply, v.]
1. Med.
A disease of the hair (Plica polonica), in which it becomes twisted and matted together. The disease is of Polish origin, and is hence called also Polish plait.
Dunglison.
2. Bot.
A diseased state in plants in which there is an excessive development of small entangled twigs, instead of ordinary branches.
3. Zool.
The bend of the wing of a bird.
© Webster 1913.