Centre on river stores local vegetable (7)
I believe the answer is:
rhubarb
'vegetable' is the definition.
(I know that rhubarb is a type of vegetable)
'centre on river stores local' is the wordplay.
I cannot really see how this works, but
'centre' could be 'hub' (hub is a kind of centre) and 'hub' is found within the answer.
'river' could be 'r' (abbreviation for river) and 'r' is found in the answer.
The remaining letters 'arb' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rhubarb that I've seen before include "a word not meant to be understood" , "Word of theatrical mumbling" , "Background noise made by actors" , "confused mutter" , "Word repeated to sim-ulate conversation on stage" .)