Sole (?), n. [F. sole, L. solea; — so named from its flat shape. See Sole of the foot.] (Zoöl.) (a) Any one of several species of flatfishes of the genus Solea and allied genera of the family Soleidæ, especially the common European species (Solea vulgaris), which is a valuable food fish. (b) Any one of several American flounders somewhat resembling the true sole in form or quality, as the California sole (Lepidopsetta bilineata), the long-finned sole (Glyptocephalus zachirus), and other species.
Lemon, orFrench, sole(Zoöl.), a European species of sole (Solea pegusa). — Smooth sole(Zoöl.), the megrim.