玉米钻心虫 yùmǐzuànxīnchóng corn borer Origin Definitions Defs Strokes Stroke Words Sentences Sents 玉米 yùmǐ noun corn corn; maize; an ear of corn钻心虫 鑽心蟲 zuānxīnchóng borer insect The larvae of various snout moths that bore into the stems of crops and cause them to wither; a major agricultural pest.