Taken illegally, as egg may be (7)
I believe the answer is:
poached
I believe this clue is a double definition.
'taken illegally' is the first definition.
(I've seen this before)
'as egg may be' is the second definition.
(eggs can be poached)
(Other definitions for poached that I've seen before include "Like many an egg" , "Stolen - cooked in hot water" , "Cooked eggs" , "taken illegally" , "Illegally hunted (game)" .)