トンカチとんかちFreq.FrequencyTop 100,000Meanings1nounhammercolloquialColloquial, somewhat childish or informal word for a hammer. Often used in everyday speech, especially by or with children.パパ、トンカチを取とって。Dad, pass me the hammer.トンカチで釘くぎを打うつ。I hammer a nail with a hammer.