Bar for swingers? (7)
I believe the answer is:
trapeze
'bar for swingers?' is the definition.
(bar where acrobats swing)
This is all the clue.
(Other definitions for trapeze that I've seen before include "Circus feature" , "High swing" , "Circus acrobatsO swing" , "Aerobatic device" , "Swing used by circus acrobats" .)