a member of one of the lower ranks in the army, the marines or the British air force （陆军、海军陆战队或英国空军的）下士 Corporal Smith 史密斯下士
Word Originmid 16th cent.: from French, obsolete variant of caporal, from Italian caporale, probably based on Latin corpus, corpor- ‘body (of troops)’, with a change of spelling in Italian due to association with capo ‘head’.