Destroying tent, Dave causes feud (8)
I believe the answer is:
vendetta
'feud' is the definition.
(I know that vendetta is a type of feud)
'destroying tent dave' is the wordplay.
'destroying' is an anagram indicator.
'tent'+'dave'='tentdave'
'tentdave' anagrammed gives 'VENDETTA'.
'causes' acts as a link.
(Other definitions for vendetta that I've seen before include "Violent feud" , "A bitter Italian feud" , "Unremitting battle" , "A family feud in Sicily" , "Lasting feud associated with Sicily and mafia" .)