Definition of chinch in US English:


(also chinch bug)


  • A plant-eating ground bug that forms large swarms on grasses and rushes.

    Two species in the family Lygaeidae, suborder Heteroptera: the American Blissus leucopterus, which is a major pest of cereal crops, and the European Ischnodemus sabuleti

    • ‘The chinch bug is a native North American insect that can destroy cultivated grass crops, especially sorghum and corn, and occasionally small grains, such as wheat and barley.’
    • ‘The product works as either a preventive or curative control for fire ants, mole crickets, sod webworms, cutworms, armyworms and chinch bugs.’
    • ‘Although chinch bug numbers are not high in most fields, growers should check fields frequently during the next couple of weeks to identify problem fields.’
    • ‘Soybeans are not a chinch bug host and would be a better choice in these areas.’
    • ‘He chuckles, ‘There's nothing a quail likes as much as a chinch bug.’’


Early 17th century (in the sense ‘bedbug’): from Spanish chinche, from Latin cimex, cimic-.