To rinse out is to wash the inside of something with clean water. Rinse out the bottle, rinse out before recycling.
It removes what is left rather than cleaning what is stuck. To rinse out containers before recycling is what keeps a whole load from being rejected.
1phraserinse outTo wash the inside of something with clean water.
“Rinse out the jar and it can go in with the glass.”
rinse out is a phrase.
Practised in Cleaning & Housework