Green’s Dictionary of Slang

gormy-ruddles n.

[SE gormy ruttles, ‘the strangles’, i.e. horses’ quinsies or tonsillitis]

the stomach, the intestines.

1889–90		Barrère & Leland Dict. of Sl., Jargon and Cant.
1890–1904		Farmer & Henley Sl. and Its Analogues.