Arrest to put king in trouble (5)
I believe the answer is:
check
'arrest' is the definition.
('check' can be a synonym of 'arrest')
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for check that I've seen before include "Verify; chess move" , "Suppress" , "Examine < crack" , "Restrain; vet" , "threat to king" .)