Free bar (4)

I believe the answer is:

save

I believe this is a double definition.

'free' is the first definition.
(thesaurus)

'bar' is the second definition.
(save is a kind of bar)

(Other definitions for save that I've seen before include "Rescue from harm" , "Apart from" , "Rescue; preserve" , "Bar" , "Rescue - except" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app