Crossword Genius

Contribution in strike (5)

Ross

I believe the answer is:

whack

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

This might be a double definition.

'contribution' is the first definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'strike' is the second definition.
(thesaurus)

'in' is the link.

Can you help me to learn more?

(Other definitions for whack that I've seen before include "Strike sharply" , "Punch" , "Hit loudly" , "ration" , "Strike; specified share" .)

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