Chopper Max Ernst uses (3)

I believe the answer is:

axe

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

'chopper' is the definition.
(something which chops)

'max ernst uses' is the wordplay.
'AXE' is hidden within the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for axe that I've seen before include "saw alternative?" , "Means of cutting" , "flower in Devon" , "Dispense with" , "Hack" .)

I've seen this clue in The Sun.

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