Chiefly North American. Any of several (chiefly smaller) kinds of North American pike, as (more fully grass pickerel) Esox americanus and (more fully…

the walleye, Sander vitreus, a pike-like perciform fish; (occasionally also) the sauger, S. canadensis.

U.S. Of fishes: Having large prominent eyes. wall-eyed pike: the pike-perch, Stizostedion americanum (or S. vitreum).

An animal that is wall-eyed. In North America a name for various fishes, esp. the wall-eyed pike, Stizostedion vitreum: see wall-eyed, adj. 3.

(see quot.).

a popular name for any of several fishes which inflate their bodies when stimulated by fear, etc.