Chinch \Chinch\, n. [Cf. Sp. chinche, fr. L. cimex.]

1. (Zo["o]l.) The bedbug (Cimex lectularius).

2. (Zo["o]l.) A bug (Blissus leucopterus), which, in the United States, is very destructive to grass, wheat, and other grains; -- also called chiniz, chinch bug, chink bug. It resembles the bedbug in its disgusting odor.

Source: Webster's Revised Unabridged Dictionary (1913)