Chūb, n.

noun

n. [This word seems to signify a large or thick head. Cf. A.-S. copp, head, Fr. chabot, a chub, Lat. capito, a fish with a large head, caput, head, Sw. kubb, a short and thick piece of wood, and Eng. cheven.] (Ichth.) A species of fresh-water fish of the Cyprinus or carp family, and genus Leuciscus. The common species is L. cephalus; the cheven.

A side-view illustration of a chub fish.
Chub (Cyprinus cephalus).