Alternatively, make rye damp, then harvest (4)
I believe the answer is:
reap
'harvest' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for reap that I've seen before include "Use a scythe" , "'As you sow, so shall you . . . .'" , "Derive as advantage" , "Gather 23dn" , "Cut or gather (a harvest)" .)