一いっ等とう空くう曹そうじ字FuriganaAudioMeanings1nounmaster sergeant (JASDF)military›A specific non-commissioned officer rank in the Japan Air Self-Defense Force.彼かれは一いっ等とう空くう曹そうに昇しょう進しんした。Break this sentence down in the analyzerHe was promoted to master sergeant.