a vestibule or other area in a house, in which wet and muddy clothes or footwear are removed.
Origin of mud room
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for mud room
One night she lay dying in her mud-room with its cement floor and iron roof.The White Queen of Okoyong|W.P. Livingstone