Embarrassed because editor eats meat (7)
I believe the answer is:
ashamed
'embarrassed' is the definition.
(similar in meaning)
'because editor eats meat' is the wordplay.
'because' becomes 'as' (I've seen this in other clues).
'editor' becomes 'ed'.
'eats' means one lot of letters goes inside another.
'meat' becomes 'ham' (ham is a kind of meat).
'as'+'ed'='ased'
'ased' going around 'ham' is 'ASHAMED'.
(Other definitions for ashamed that I've seen before include "Mortified, humbled" , "'Embarrassed, guilty (7)'" , "Remorseful" , "Humiliated" , "Discomfited" .)