Keep out of a drinking place (3)
I believe the answer is:
bar
'drinking place' is the definition.
'keep out of a' is the wordplay.
'keep' becomes 'bearon' (bearing on is a kind of keeping).
'out of' is a deletion indicator.
'a' becomes 'one'.
'bearon' with 'one' taken out is 'BAR'.
(Other definitions for bar that I've seen before include "Prohibit - drinking place" , "Save; pub" , "Obstruct" , "Length of wood or metal - drinking place" , "In Mississippi, measure" .)