Pronunciation: (rat'hōl"),[key] —n. 1. a hole made by a rat, as into a room, barn, etc.: The first chore in the old building is to plug up the ratholes. 2. the burrow or shelter of a rat.
3. any small and uncomfortable room, office, apartment, etc., esp. one that is dirty or disordered: He lives in a rathole near the docks. 4. down the rathole, for a worthless purpose or purposes: seeing your inheritance disappear down the rathole.