Check; use sieve again (8)
I believe the answer is:
restrain
This could be a double definition.
'check use' is the first definition.
'restrain' can be an answer for 'check' (synonyms). I'm unsure of the 'use' bit.
'sieve again' is the second definition.
('strain' can be a synonym for 'sieve' so perhaps 'restrain' is OK for 'sieve again')
Can you help me to learn more?
(Other definitions for restrain that I've seen before include "bottle up" , "bar" , "Arrest - confine - subdue" , "In arrest (anagram)" , "Prevent (from excess)" .)