Tend terrible damage (4)
I believe the answer is:
dent
'damage' is the definition.
(dent is a kind of damage)
'tend terrible' is the wordplay.
'terrible' indicates anagramming the letters.
'tend' anagrammed gives 'DENT'.
(Other definitions for dent that I've seen before include "Depression caused by blow" , "TV lexicographer?" , "Surface hollow" , "Slight damage" , "Small hollow" .)