fort/fɔ:t; fɔrt/ n1 building(s) specially made or strengthened for the military defence of an area 要塞; 堡垒; 碉堡; 城堡.2 (idm 习语) hold the `fort have the responsibility or care of sth/sb in the absence of others 代他人尽责或替他人关照某人[某事物].
牛津英汉双解词典