() a loose coat worn over other clothes to protect them from dirt, etc 外套；罩衣◆All laboratory staff must wear a white overall at all times. 所有实验室工作人员所有时间都必须穿白罩衣。
overalls () (NAmEˈcoveralls) [] a loose piece of clothing like a shirt and trousers/pants in one piece, made of heavy fabric and usually worn over other clothing by workers doing dirty work 工作套装◆The mechanic was wearing a pair of blue overalls. 机修工穿了一身蓝色工作套装。