Christmas delivery vehicle butcher mentioned (6)
I believe the answer is:
sleigh
'christmas delivery vehicle' is the definition.
(as in Santa's sleigh)
'butcher mentioned' is the wordplay.
'butcher' becomes 'slay' (both can mean to murder).
'mentioned' indicates a 'sounds like' (homophone) clue.
'slay' is a homophone of 'SLEIGH'.
(Other definitions for sleigh that I've seen before include "Horse-drawn sledge" , "Carriage to run on snow" , "Transport in winter" , "Santa's vehicle" , "vehicle drawn by reindeer" .)