A pint? Not quite open (4)

I believe the answer is:

ajar

'not quite open' is the definition.
(ajar means slightly open)

'a pint?' is the wordplay.
'pint?' becomes 'jar' (I've seen this in other clues).
'a'+'jar'='AJAR'

(Other definitions for ajar that I've seen before include "Part-open" , "Partially open" , "letting in a little light?" , "Half open" , "A litle bit open" .)

I've seen this clue in The Times.

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