a person in uniform whose job is to stand at the entrance to a hotel, etc. and open the door for visitors, find them taxis, etc. （在旅馆等门口为来宾开门、叫出租车等的）穿制服的看门人，门童 Word Originmid 17th cent.: from French, from medieval Latin commissarius ‘person in charge’, from Latin committere ‘entrust’(in medieval Latin ‘put into custody’), from com- ‘with’ + mittere ‘put or send’.