drawbridge /'droibnds; 'drj,bnds/ n bridge that can be pulled up at the end(s) by chains (eg across the moat of a castle in ancient times to prevent passage, or across a river or canal to allow ships to pass). (可拉起或放下的)活動(dòng)橋; 曳起橋(例如古時(shí)設(shè)于防御城堡之壕溝上以控制通行者，或設(shè)于 - 河上可拉起讓船通行者)。