Also swinging on the bar (6)
I believe the answer is:
saloon
'the bar' is the definition.
('saloon' can be a synonym of 'bar')
'also swinging on' is the wordplay.
'swinging' indicates anagramming the letters.
'also' is an anagram of 'salo'.
'salo'+'on'='SALOON'
(Other definitions for saloon that I've seen before include "Large public room" , "Car; public room" , "Car with separate boot" , "Boozer or shape of car" , "An American pub, as in the wild west" .)