Expresses openings (5)

I believe the answer is:

vents

I believe this clue is a double definition.

'expresses' is the first definition.
(venting is a kind of expressing)

'openings' is the second definition.
(vent is a kind of opening)

(Another definition for vents that I've seen is " Escape holes for gas or air".)

I've seen this clue in The Mirror.

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