Search with clenched fist (4)
I believe the answer is:
sift
'search' is the definition.
(I've seen this in another clue)
'clenched fist' is the wordplay.
'fist' can be anagrammed to 'SIFT'.
However, I'm not clear how this is indicated.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for sift that I've seen before include "Examine minutely" , "Use fist to pass through perforated container" , "Filter, riddle" , "Winnow out" , "Separate out - examine closely" .)