New star dies in accident (8)
I believe the answer is:
disaster
'accident' is the definition.
(disaster is a kind of accident)
'new star dies' is the wordplay.
'new' indicates anagramming the letters.
'star'+'dies'='stardies'
'stardies' is an anagram of 'DISASTER'.
'in' acts as a link.
(Other definitions for disaster that I've seen before include "not a success!" , "complete failure" , "Calamity, sudden great misfortune" , "Calamity, tragedy" , "Star dies (anag)" .)