割鶏牛刀 かっけいぎゅうとう Meanings Noun using a meat ax when a knife would suffice; taking a sledgehammer to crack a nut; using a grand-scale measure (a massive instrument) to deal with an insignificant problem Kanji 割 divide. Read as カツ. 鶏 chicken. Read as ケイ. 牛 cow. Read as ギュウ. 刀 katana. Read as トウ. Jinuma: Japanese Dictionary · Word lists