胸キュン むねキュン Also written むねきゅん, 胸きゅん Meanings Noun, する verb heart pounding; chest tightening See also: きゅん. Kanji 胸 chest. Read as むね. Example sentences トムの声って超かっこいい!もうマジで胸キュンしまくり!Tom's voice is so sexy! It really makes my chest tight! Jinuma: Japanese Dictionary · Word lists