Eminem perhaps cut off and left beating on a drum (6)

I believe the answer is:

rappel

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'drum' is the definition.
Although both the answer and definition are verbs in their base form, I can't see how they can define each other.

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for rappel that I've seen before include "abseiling" , "Abseil" , "going down" .)

I've seen this clue in The Times and The Sunday Times.

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