Chinch(n.) The bedbug (Cimex lectularius).
Chinch(n.) 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.
Chinche(a.) Parsimonious; niggardly.
Words within chinches