Sacred creature originally Egyptian? (6)
I believe the answer is:
scarab
'sacred creature originally egyptian?' is the definition.
I can't judge whether this defines the answer.
'sacred creature originally egyptian?' is the wordplay.
'originally' suggests taking the first letters.
'egyptian?' becomes 'arab' (I can't explain this - if you can you should believe this answer much more).
The first letters of 'sacred creature' is 'sc'.
'sc'+'arab'='SCARAB'
(Other definitions for scarab that I've seen before include "divine creature" , "Old abuse" , "Beetle considered divine by ancient Egyptians" , "Sacred dung-beetle" , "crawler" .)