Grips mouths (9)

I believe the answer is:

entrances

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This could be a double definition.

'grips' is the first definition.
The definition and answer can be both acts as well as being plural nouns.
Perhaps there's a link between them I don't understand?

'mouths' is the second definition.
Both the answer and definition are plural nouns.
Maybe there's a link between them I don't understand?

Can you help me to learn more?

(Other definitions for entrances that I've seen before include "Delights" , "Transports" , "Charms" , "make appearances on stage" , "Fills with delight" .)

I've seen this clue in The Guardian.

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