Renowned sofa, um, exploded (6)
I believe the answer is:
famous
'renowned' is the definition.
(I know that renowned can be written as famous)
'sofa um exploded' is the wordplay.
'exploded' indicates an anagram.
'sofa'+'um'='sofaum'
'sofaum' is an anagram of 'FAMOUS'.
(Other definitions for famous that I've seen before include "Known and esteemed" , "Renowned, celebrated" , "Renowned, noted" , "Well-known" , "Widely-known" .)