1736 Canting Dictionary / B / BOB-TAIL [person]
a light woman, also an Eunuch or impotent Fellow.
· ·
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
Bob Tail in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).