Make wrinkled bottom lose skin (6)

I believe the answer is:

rumple

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'make wrinkled' is the definition.
I can't judge whether this definition defines the answer.

'bottom lose skin' is the wordplay.
'bottom' becomes 'rump' (rump can informally mean someone's bottom).
'skin' means to remove the middle letters (only the skin or outside of the word is used).
'lose' with its centre taken out is 'le'.
'rump'+'le'='RUMPLE'

Can you help me to learn more?

(Other definitions for rumple that I've seen before include "Wrinkle, make uneven" , "Make uneven or wrinkled" , "Dishevel, ruffle" , "Disturb the smoothness" , "Make (eg, bed) untidy" .)

I've seen this clue in the Sydney Morning Herald.

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