Crossword Genius

Convenience store monopolises spring (6,4)

Ross

I believe the answer is:

corner shop

I'm a little stuck... Click here to teach me more about this clue!

'convenience store' is the definition.
'corner shop' can be an answer for 'store'. I am unsure of the 'convenience' bit.

'monopolises spring' is the wordplay.
'monopolises' becomes 'corners' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'spring' becomes 'hop' (I've seen this before).
'corners'+'hop'='CORNER SHOP'

Can you help me to learn more?

(Other definitions for corner shop that I've seen before include "Small local retailer" , "Local outlet" , "Small retail outlet" , "Retail establishment on the angle of two streets?" .)

I've seen this clue in The Guardian.
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