Egg container
'egg container' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for carton that I've seen before include "Cardboard or plastic container" , "Box without great strength" , "A cardboard container as for milk" , "Sydney -, Tale of Two Cities hero" , "Light cardboard box" .)
'egg container' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sac that I've seen before include "Bodily cavity enclosed by a membrane" , "Pouch or bag-like structure" , "Pouch in the body" , "Bladder" , "Membranous cavity" .)