Wiktionary
maw-worm
n. Any of several parasitic worms which infest the mammalian stomach and intestines, especially a nematode.
Usage examples of "maw-worm".
You tell me this little maw-worm has led a bunch of farmers and hayseeds against Stephen's crack troops?
This individual she introduced as a nasty, twitty old maw-worm, disclosing that he wouldn’t sell his pig until convinced that it would be eaten by a duke, and not by a Captain Sharp, masquerading as such.
It's in my drawer along with the box of Martian maw-worms and dried-up plant life.