Crossword Genius

Foreign priest admitted by junior vaccinator? (6)

Ross

I believe the answer is:

jabber

I'm a little stuck... Click here to teach me more about this clue!

'vaccinator?' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's a link between them I don't understand?

'foreign priest admitted by junior' is the wordplay.
'foreign priest' becomes 'abbe' (I've seen this before. I am not sure about the 'foreign' bit.).
'admitted by' is an insertion indicator.
'junior' becomes 'jr' (abbreviation).
'abbe' going into 'jr' is 'JABBER'.

Can you help me to learn more?

(Other definitions for jabber that I've seen before include "jaw, senselessly" , "indistinct speech" , "Gabble, talk rapidly" , "Rapid (foreign) talk" , "one giving vaccination" .)

I've seen this clue in The Times.
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