Travelling act goes round without furnishing entertainment (7)
I believe the answer is:
cabaret
'entertainment' is the definition.
(I know that cabaret is a type of show)
'travelling act goes round without' is the wordplay.
'travelling' becomes 'bare' (I can't justify this - if you can you should believe this answer much more).
'goes round' is an anagram indicator.
'without' is an insertion indicator.
'act' is an anagram of 'cat'.
'bare' inserted within 'cat' is 'CABARET'.
'furnishing' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for cabaret that I've seen before include "Variety entertainment" , "Nightclub 12ac" , "Musical - nightclub entertainment" , "Evening entertainment as in nightclub" , "Series of acts" .)