To live or lodge in a temporary residence, especially with a live-in landlord away from home for purpose of quick work commuting.
Word origin: A landlord offered to wash the used pots or containers of rice for the worker lodging with her. She said she will wash his pots. Ergo "potwash".
Example 1: Are you staying in potwash tonight or going back to Nottingham?
Example 2: You at potwash tonight or you going home?