Bound to apply 1p discount to sticky sweet (6)

I believe the answer is:

lollop

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'bound' is the definition.
(to lollop is to gallop or bound around)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for lollop that I've seen before include "Flop about" , "Silly walk" , "take it easy" , "Central courtyard" , "Bound along clumsily" .)

I've seen this clue in The Telegraph.

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