Gambs (Grose 1811 Dictionary)
Thin, ill-shaped legs: a corruption of the French
word jambes. Fancy gambs; sore or swelled legs.
Definition taken from
The 1811 Dictionary of the Vulgar Tongue,
originally by Francis Grose.
Gallows Bird * Gambadoes
1736 Dictionary of canting and thieving slang
John S. Farmer's collection
canting songs and slang rhymes