Men are in tent dancing tango for fun (13)
I believe the answer is:
entertainment
'fun' is the definition.
(thesaurus)
'men are in tent dancing tango' is the wordplay.
'dancing' is an anagram indicator.
'tango' becomes 't' (phonetic alphabet: alpha, bravo, charlie etc.).
'men'+'are'+'in'+'tent'='menareintent'
'menareintent' with letters rearranged gives 'entertainmen'.
'entertainmen'+'t'='ENTERTAINMENT'
'for' is the link.
(Other definitions for entertainment that I've seen before include "show business" , "Recreation activity" , "Diverting activity" , "Diversion for one's leisure time" , "Amusement; hospitality" .)