The Collaborative International Dictionary of English v.0.48:
Skate \Skate\, n. [Icel. skata; cf. Prov. G. schatten,
meer-schatten, L. squatus, squatina, and E. shad.] (Zool.)
Any one of numerous species of large, flat elasmobranch
fishes of the genus Raia, having a long, slender tail,
terminated by a small caudal fin. The pectoral fins, which
are large and broad and united to the sides of the body and
head, give a somewhat rhombic form to these fishes. The skin
is more or less spinose.
Note: Some of the species are used for food, as the European
blue or gray skate (Raia batis), which sometimes
weighs nearly 200 pounds. The American smooth, or
barn-door, skate (Raia laevis) is also a large
species, often becoming three or four feet across. The
common spiny skate (Raia erinacea) is much smaller.
Skate's egg. See Sea purse.
Skate sucker, any marine leech of the genus Pontobdella,
parasitic on skates.