Bean that may well feature in a vegetarian's diet (3)
I believe the answer is:
nut
'bean' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for nut that I've seen before include "Combines with bolt to secure" , "Hard-shelled fruit or informal eccentric" , "Head (sl.)" , "1A [CRACKPOT]?" , "Bolt counterpart" .)
