Grain clearly indicated (5)
I believe the answer is:
spelt
I believe this is a double definition.
'grain' is the first definition.
(I know that spelt is a type of wheat)
'clearly indicated' is the second definition.
(spelt out)
(Other definitions for spelt that I've seen before include "grain" , "Variety of wheat" , "Inferior species of wheat" , "cereal" , "Recited the letters of a word" .)