Listen out for Christmas decoration (6)
I believe the answer is:
tinsel
'christmas decoration' is the definition.
(tinsel is strewn around at Christmas)
'listen out' is the wordplay.
'out' indicates an anagram (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 "Strip of glittering paper" , "Cheap shiny stuff" , "Glittering Christmas strip" , "decorating material" , "Shiny stuff of silent kind" .)