Key stuck in public lav I salvaged (6)

I believe the answer is:

clavis

'key' is the definition.
(thesaurus)

'stuck in public lav i salvaged' is the wordplay.
'stuck in' says the answer is hidden in the clue.
'CLAVIS' can be found hidden inside 'public lav i salvaged'.

I've seen this clue in The Times and The Sunday Times.

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