Crossword Genius

Old Irish prison officer round with very good wishes (5,3)

Ross

I believe the answer is:

mazel tov

'good wishes' is the definition.
(Jewish phrase)

'old irish prison officer round with very' is the wordplay.
'old irish prison' becomes 'maze' (HM Prison Maze in Northern Ireland).
'officer' becomes 'lt' (abbreviation for lieutenant).
'round with' becomes 'o' (round can mean a round object. I am not sure about the 'with' bit.).
'very' becomes 'v' (abbreviation).
'maze'+'lt'+'o'+'v'='MAZEL TOV'

(Another definition for mazel tov that I've seen is " best wishes".)

I've seen this clue in The Times.
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