Abdominal protrusion (6)
I believe the answer is:
hernia
'abdominal protrusion' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hernia that I've seen before include "Protruding rupture" , "Rupture, protrusion of organ through abdominal wall" , "Protrusion of organ throung abdinen, rupture" , "Protrusion of organ through wall of abdomen, a rupture" , "A rupture within the body" .)