Green’s Dictionary of Slang

trapeze artist n.

[artist n. (1)]

1. [1930s+] a sexual contortionist.

2. [1930s–40s] (US tramp) a tramp who rides the trains.

3. [1940s] a woman who enjoys cunnilingus, esp. as part of sex exhibitions.

4. [1940s] (US gay) a fellator.