Crossword Genius

Used one's head with striking effect (6)

Ross

I believe the answer is:

butted

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'used' is the definition.
The definition and answer can be both to do with contact as well as being past participle verbs.
Perhaps you can see a link between them that I don't see?

I don't understand the rest of the clue.

Can you help me to learn more?

(Another definition for butted that I've seen is " Pushed or struck with head".)

I've seen this clue in the Evening Standard.
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