Quinoa or spelt (5)
I believe the answer is:
grain
'quinoa or spelt' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for grain that I've seen before include "Enter into combat with" , "Eg, wheat" , "eg Barley" , "basis for whisky" , "Small hard seed of corn etc" .)