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 and The Guardian.

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