from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A mat placed before a doorway for wiping the shoes.
- n. Slang One who submits meekly to domination or mistreatment by others.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A coarse mat at the entrance to a house, upon which one wipes one's shoes.
- n. Someone who is overly submissive to others' wishes.
from the GNU version of the Collaborative International Dictionary of English
- n. a mat placed outside and exterior door for wiping the shoes before entering.
- n. A person who is habitually abused, taken advantage of or humiliated; sometimes, one who is physically weak.
from The Century Dictionary and Cyclopedia
- n. A heavy mat made of hemp, flax, or jute, woven or tied, or of sedge, straw, rushes, etc., or sometimes of caoutchouc, placed before a door for use in cleaning the shoes by those entering.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mat placed outside an exterior door for wiping the shoes before entering
- n. a person who is physically weak and ineffectual
From door + mat (Wiktionary)