breechKK [ˋbritʃ] /ˈbɹitʃ/名詞1後膛He opened the breech and slid a fresh cartridge into place.他打開後膛，把一顆新的彈藥推進去。2臀位醫學The doctor confirmed that the baby was in breech.醫生確認胎兒是臀位。形容詞1臀位的醫學A breech delivery often calls for extra monitoring during labor.臀位分娩在產程中通常需要更密切的監測。