Take off some important pieces? (4)

I believe the answer is:

geld

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'take' is the definition.
The answer and definition can be both related to bodily activities as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for geld that I've seen before include "Castrate a horse, for example" , "Castrate (an animal)" .)

I've seen this clue in The Telegraph.

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