Crossword Genius

Open at lunch breaks (7)

Ross

I believe the answer is:

unlatch

'open' is the definition.
(unlatching something is opening it)

'at lunch breaks' is the wordplay.
'breaks' is an anagram indicator.
'at'+'lunch'='atlunch'
'atlunch' anagrammed gives 'UNLATCH'.

(Other definitions for unlatch that I've seen before include "Unfasten (a door)" , "Free bar" .)

I've seen this clue in The Daily Mail.
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