Gain from learning? (4)
I believe the answer is:
earn
'gain' is the definition.
(I've seen this before)
'from learning?' is the wordplay.
'from' indicates a hidden word.
'EARN' can be found hidden inside 'learning'.
(Other definitions for earn that I've seen before include "Receive in return for" , "Acquire through merit" , "There's merit" , "Win" , "Gain by working" .)