European tribe almost destroyed (4)
I believe the answer is:
brit
'european' is the definition.
(I know that Brit is a type of european)
'tribe almost destroyed' is the wordplay.
'almost' means to remove the last letter (almost the whole word is kept).
'destroyed' indicates anagramming the letters.
'tribe' with its last letter removed is 'trib'.
'trib' anagrammed gives 'BRIT'.
(Other definitions for brit that I've seen before include "UK native; young sprat" , "Briton (colloquial)" , "[SOMETHING FISHY]" .)