Twisted-sounding grain (3)
I believe the answer is:
rye
'grain' is the definition.
(I know that rye is a type of grain)
'twisted-sounding' is the wordplay.
'twisted' becomes 'wry' (I've seen this before).
'sounding' indicates a 'sounds like' (homophone) clue.
'wry' sounds like 'RYE'.
(Other definitions for rye that I've seen before include "Wheat-like cereal plant" , "Cereal plant; whisky" , "Cereal grass - Sussex Cinque Port" , "Whiskey ingredient" , "Grain crop" .)