noun
also plaise ˈplās
( plural plaice also plaise )
Etymology: Middle English plaice, plais, from Old French plaïs, plaïz, from Late Latin platensis, probably from Greek platys broad, flat — more at place
1.
a. : a European flounder ( Pleuronectes platessa ) that grows to a weight of 8 or 10 pounds or more
b. : any of various American flatfishes ; especially : summer flounder
2. dialect England : fluke I 2