耳をダンボにする みみをダンボにする Meanings Expression, する verb to prick up one's ears; to listen attentively (literally: to make one's ears (like) Dumbo's) See also: 耳がダンボ (みみがダンボ). Kanji 耳 ear. Read as みみ. Word lists Idioms Jinuma: Japanese Dictionary · Word lists