Convenience store monopolises spring (6,4)
I believe the answer is:
corner shop
'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?" .)