Listen out for something sparkling (6)
I believe the answer is:
tinsel
'something sparkling?' is the definition.
'listen out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'listen' is an anagram of 'TINSEL'.
'for' acts as a link.
(Other definitions for tinsel that I've seen before include "Listen; it's shiny decorative stuff" , "Listen (anag) - something cheap and showy" , "Cheap shiny stuff" , "23 across (anag)" , "Glittering Christmas strip" .)