Band or group of Le Pétomane, say, out of France (6)

I believe the answer is:

garter

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'band' is the definition.
(garter is a kind of band)

I can't explain the remainder of the clue.

(Other definitions for garter that I've seen before include "Band around the leg or arm" , "Band to hold up a stocking" , "Band to keep a stocking or sleeve up" , "Sock supporter" , "Stocking supporter" .)

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