Green’s Dictionary of Slang

1. the anus.

1979

Maledicta III:2 232: Still more words of this fucking vocabulary are [...] ringtail.

2. (also ring tail wife) a tramp’s young homosexual companion.

1921		P. & T. Casey Gay-cat 234: Mostly we has ter cop off the strong-armers an’ stick-ups an’ grifters an’ dips an’ other ringtails wot pester a circus.
1933		Ersine Und. and Prison Sl.
1949		Monteleone Criminal Sl. (rev. edn) 194: ring tail wife A catamite; a boy kept for unnatural purposes by a tramp.
1952		J. Jones From Here to Eternity (1998) 422: I know that on the bum a lot of good guys went queer [...] Some of the old timers would take the young kids and train them to be ringtails.
1972		(con. 1930s–40s) B. Rodgers Queens’ Vernacular 108: Hobo slang (kwn ’30s & ’40s) [...] The adolescent who usually doubled as cook/lover to a homosexual hobo was called a [...] ringtail.
1992		Bentley & Corbett Prison Sl. 59: Girl A feminine, passive homosexual. (Archaic: nola, ring tail).