Reapper half cut (4)
I believe the answer is:
reap
'cut' is the definition.
(I know this)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for reap that I've seen before include "Cut and gather (crop)" , "Cut the corn" , "'As you sow, so shall you . . . .'" , "Get -- derive" , "Derive as a reward" .)