Breathes with difficulty and gags (7)

I believe the answer is:

wheezes

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This clue could be a double definition.

'breathes with difficulty' is the first definition.
'wheezes' can be an answer for 'breathes' (wheezing is a kind of breathing). I'm unsure of the 'with difficulty' bit.

'gags' is the second definition.
('wheeze' can be a synonym of 'gag')

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.

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