Roars like certain puffers (7)

I believe the answer is:

bellows

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'roars' is the definition.
('bellow' can be a synonym of 'roar')

I cannot understand how the remainder of the clue works.

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(Other definitions for bellows that I've seen before include "Wind pump; shouts" , "sings very loudly" , "shouts belligerently" , "Air blower for fire" , "Shouts loudly" .)

I've seen this clue in the Evening Standard.

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