1N-COUNT 门口地垫;门口擦鞋垫 A doormat is a mat by a door which people can wipe their shoes on when they enter a house or building. 门口地垫;门口擦鞋垫
2N-COUNT 受气包;逆来顺受的可怜虫 If you say that someone is a doormat, you are criticizing them because they let other people treat them badly, and do not complain or defend themselves when they are being treated unfairly. 受气包;逆来顺受的可怜虫 [informal, disapproval]
If you always give in to others you will end up feeling like a doormat.