full backBrE/ˈfʊl bæk/NAmE/ˈfʊl bæk/ (NAmEˈfullback) noun[C]oneofthedefendingplayersinfootball (soccer), hockey or rugbywhosepositionisnearthegoaltheyaredefending(足球、曲棍球或橄榄球)后卫[C]theattackingplayerinAmerican football whose position is behind the quarterback and beside the half backs(美式足球)全卫[U]thepositionafullbackplaysat后卫位置◆Hunterisatfullback. 亨特担任后卫。