Emily Dickinson Lexicon

CHUB, n. [This word seems to signify thick head, or a mass or lump. In Pers. chub or chob is a club. See Class Gb, Nos. 1 and 2.]

A river fish, called also cheven, of the genus Cyprinus. The body is oblong, nearly round; the head and back green; the sides silvery, and the belly white. It frequents deep holes in rivers shaded by trees; but in warm weather floats near the surface, and furnishes sport for anglers. It is indifferent food. – Dict. of Nat. Hist.