Beetle about having run into destroyer (6)
I believe the answer is:
scarab
'beetle' is the definition.
(scarab is a kind of beetle)
'about having run into destroyer' is the wordplay.
'about' becomes 'ca' (abbreviation for 'circa').
'having run' becomes 'r' (I've seen this in other clues).
'into' indicates putting letters inside.
'destroyer' becomes 'sab' (I am not sure about this - if you are sure you should believe this answer much more).
'ca'+'r'='car'
'car' inserted within 'sab' is 'SCARAB'.
Can you help me to learn more?
(Other definitions for scarab that I've seen before include "Beetle revered in ancient Egypt" , "Sacred beetle of ancient Egypt" , "Large dung beetle" , "Sacred dung-beetle" , "Dung beetle - ancient Egyptian cut gem" .)