Crossword Genius

Allows mouthpiece to disclose secret (7)

Ross

I believe the answer is:

letslip

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'disclose secret' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'allows mouthpiece' is the wordplay.
'allows' becomes 'lets' ('let' can be a synonym of 'allow').
'mouthpiece' becomes 'lip' (part of the mouth).
'lets'+'lip'='LETSLIP'

'to' acts as a link.

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I've seen this clue in The Irish Times.
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