柯林斯詞典petty officer (petty officers) 1. N-COUNT/N-TITLE A petty officer is an officer of low rank in the navy. (海軍)士官 返回 petty officer劍橋詞典a rank in a navy , below the officers but above the ordinary sailors 海軍軍士 Chief Petty Officer （美國海軍）三級(jí)軍士長；（英國海軍）上士 返回 petty officer