plural of yardbirdn a military recruit who is assigned menial tasksn a person serving a sentence in a jail or prison
(yardbird 的复数) n. 入伍新兵, 罚做杂务的士兵, 步兵, (美)(非正式)罪犯, 犯人[法] 未训练的新兵, 罪犯, 囚犯