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Webster's Dictionary (1865)

Chĭnch, n.

noun

n. [Sp. chinche, bug, from Lat. cimex, It. cimice.]

  1. (Entom.) The bed-bug (Cimex lectularius).
  2. An insect or bug, resembling the bed-bug in its disgusting odor, which is very destructive to wheat and other grains; — also called chintz, chinch-bug, chink-bug.