Dress stuffed with gear in robbery (10)

I believe the answer is:

brigandage

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'robbery' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I don't see?

'dress stuffed with gear' is the wordplay.
'dress' becomes 'bandage' (bandaging is a kind of dressing).
'stuffed with' means one lot of letters goes inside another (some letters get stuffed inside).
'gear' becomes 'rig' (rig is a kind of gear).
'bandage' placed around 'rig' is 'BRIGANDAGE'.

'in' is the link.

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I've seen this clue in The Telegraph.

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