clean somebody/something out phrasal verb (see also clean)

1. clean something ↔ out to make the inside of a room, house etc clean or tidy:
We’d better clean out the attic this week.

2. clean somebody out informal if something expensive cleans you out, you spend so much money on it that you now have very little left:
Our trip to Paris cleaned me out.

3. clean somebody/something out informal to steal everything from a place, or all of someone’s possessions

[TahlilGaran] Dictionary of Contemporary English ▲

clean out
clean (someone) out
to take everything from someone.
Thieves took my bank card and absolutely cleaned me out.

I'd offer you something to eat, but Sean was here last night and he cleaned us out.

[TahlilGaran] English Idioms Dictionary ▲

clean out
v.
1. slang To take everything from; empty; strip.
George's friends cleaned him out when they were playing cards last night.
The sudden demand for paper plates soon cleaned out the stores.
2. informal To get rid of; remove; dismiss.
The new mayor promised to clean the crooks out of the city government.

[TahlilGaran] English Idioms Dictionary ▲