Fragment of asteroid? Is asteroid bringing cataclysm? (8)
I believe the answer is:
disaster
'cataclysm?' is the definition.
(synonyms)
'fragment of asteroid? is asteroid' is the wordplay.
'fragment of' says the answer is hidden in the clue (I've seen this in other clues).
'DISASTER' is hidden within 'asteroid is asteroid'.
'bringing' is the link.
(Other definitions for disaster that I've seen before include "complete failure" , "Great tradegy or cataclysm" , "Star dies (anag)" , "Catastrophic occurrence" , "Extreme ruin or misfortune" .)