Crossword Genius

Said they'll jemmy it open to get a reward (5)

Ross

I believe the answer is:

prize

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

'a reward' is the definition.
(I know that reward is a more specific form of recognise)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for prize that I've seen before include "Reward for having won a contest" , "See 16" , "Award; value highly" , "Trophy" , "something of great value?" .)

I've seen this clue in The Irish Times.
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