See Government file that’s coarse (5)
I believe the answer is:
'see' is the definition.
(I've seen this in another clue)
'government file that's coarse' is the wordplay.
I cannot really see how this works, but
'government' could be 'g' (abbreviation for government) and 'g' is found in the answer.
'file' could be 'rasp' (rasp is a kind of file) and 'rasp' is present in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for grasp that I've seen before include "Clutch" , "Take hold of firmly" , "Understand; hold tight" , "Appreciation" , "Support; rugby player" .)