Horse around (4)
'horse around' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for play that I've seen before include "Perform music" , "Stage drama" , "Portray in a drama" , "Drama; engage in games" , "Theatre performance" .)
'horse around' is the definition.
(thesaurus)
This is all the clue.