COCKCHAFER Meaning of COCKCHAFER in English [ 'kɒkˌtʃeɪfə ]■ noun a large brown dusk-flying beetle which is a destructive plant pest. [ Melolontha melolontha .]OriginC18: from cock 1 (expressing size) + chafer . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004