n. 1. a mat placed outside and exterior door for wiping the shoes before entering. [ wns=2 ] Syn. -- welcome mat. [ WordNet 1.5 ]
2. (figurative) A person who is habitually abused, taken advantage of or humiliated; sometimes, one who is physically weak; as, they used him for a doormat. [ wns=1 ] Syn. -- weakling. [ WordNet 1.5 ]