A European food fish (Pleuronectes platessa), allied to the flounder, and growing to the weight of eight or ten pounds or more.
(b)
A large American flounder (Paralichthys dentatus; called also brail, puckermouth, and summer flounder. The name is sometimes applied to other allied species. (Written also plaise)
Plaice mouth, a mouth like that of a plaice; a small or wry mouth. (R.)