flush out

US /flʌʃ aʊt/
UK /flʌʃ aʊt/
"flush out" picture
1.

to force someone or something out of a hiding place

:
The police tried to flush out the suspects from the building.
We need to flush out the truth about what happened.
2.

to clean something by forcing water through it

:
You should flush out the pipes regularly to prevent blockages.
The plumber had to flush out the entire drainage system.