Green’s Dictionary of Slang

1. a boiled leg of mutton.

1823		‘Jon Bee’ Dict. of the Turf, the Ring, the Chase, etc.
1837		‘The Devil and Johnny Dixon’ in Bentley’s Misc. Mar. 252: Three priests, after confessing half a parish, would scarcely demolish that wabbler.
1890–1904		Farmer & Henley Sl. and Its Analogues.

2. see foot-wabbler under foot n.