Strip of some robes (3)

I believe the answer is:

rob

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'strip' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

(Other definitions for rob that I've seen before include "Hold up" , "Nick" , "Thieve" , "boy's name" , "Steal or purloin" .)

I've seen this clue in the Evening Standard.

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