Green’s Dictionary of Slang

(US gay) a male homosexual who frequents discos.

2007

T. Serah Drop Dead 32: ‘[T]here’s nothing cuter than a circuit boy reveling in his fabulousness [ibid.] 182: [He was no longer the shallow, self-centered circuit boy we met forty-seven short episodes ago [Simes:DLSS].

(US gay) a gay disco-dance party.

1999		J.M. Wilson Justice at Risk 49: [G]ay circuit parties that brought together thousands of gay men in celebration of sensuality [Simes:DLSS].
2007		T. Serah Drop Dead 27: Someone else said that he was at Stonewall, which Joey thought was a monument in Georgia where they held circuit parties [Simes:DLSS].
2011		G.S. Dhalla Exiles 99: Nuru spent his family fortune on circuit parties and designer drugs as freely as the free-flowing oil that had produced it [Simes:DLSS].

(US gay) a male homosexual who frequents discos.

1987		PWA Coalition Newslette Oct. 29: A foolish young circuit queen finds out what it means to be wise [Simes:DLSS].
1995		I. Young Stonewall Experimen 114: One former ‘circuit queen’ remembered: ‘Life on N.Y.’s gay circuit meant three things: hard men, soft drinks, and drugs [Simes:DLSS].
2007		T. Serah Drop Dead 159: [A] middle-aged circuit queen and a suburbanite with a page-boy haircut and globular buttocks [Simes:DLSS].

(US teen) one who pursues a wide range of young women.

1946

Pittsburgh Post-Gaz. (PA) 12 Mar. 9/8: Circuit Rider — Wolf who dates all the gals.

(US gay) a friend in the gay world with whom one would not have sex.

2007

T. Serah Drop Dead 57: Joey’s nosey co-workers were totally used to hearing him talk with Manny and his other circuit sisters [Simes:DLSS].

(Aus.) of a prostitute, to tour diggings and camps selling her services.

1901

Bulletin (Sydney) 7 Sept. 14/2: Re the lydies who ‘travel’ their charms [...] almost the only ‘business’ done, outside the Westralian goldfields, is – barring Japs – by women who ‘go on circuit.’.