Turbot, n. [F.; -- probably so named from its shape, and from L. turbo a top, a whirl.].
A large European flounder (Rhombus maximus) highly esteemed as a food fish. It often weighs from thirty to forty pounds. Its color on the upper side is brownish with small roundish tubercles scattered over the surface. The lower, or blind, side is white. Called also bannock fluke. [1913 Webster]
Turbot, n.
1 a flatfish, Scophthalmus maximus, having large bony tubercles on the body and head and prized as food .
2 any of various similar fishes including halibut.
Etymology
ME f. OF f. OSw. t{ouml}rnbut f. t{ouml}rn thorn + but BUTT(3)