Green’s Dictionary of Slang

1. the Trocadero Music Hall, Piccadilly Circus, London.

1884		Sporting Times 9 Aug. 1/4: I looked in at the South London, dropped in at the Pav., glanced at the Troc., [...] on my way to the Oxford.
1890		Sporting Times 8 Feb. 1/5: Sam Adams says he doesn’t want any performing bears, or lion on horseback, or playful elephant at the Troc if only Gubbins and the Economist will promise to repeat their celebrated pas de deux in the saloon, every evening.
1899		N. Gould Racecourse and Battlefield 81: We will celebrate my appointment in real good style. Where shall it be – the Troc, the Cri, the Princes, or the Club?
1908		E. Stagg Night Scenes in London 80: I was going to dine at the Troc.
1916		R.L. Mackay diary 5 Sept. 🌐 Breakfast in Regent Palace Hotel, London. Lunch at The Troc!
1929		Nottingham Eve. Post 13 Feb. 1/4: Fire at ‘The Troc’ [...] The Trocadero, in Shaftesbury Avenue [...] was slightly damaged by firte.
1959		B. Naughton ‘Spiv in Love’ in Late Night on Watling Street (1969) 124: Francy the Troc?
1973		(ref. to 1930) E. Williams Emlyn 170: In the Long Bar at the Troc, he had got to know a presentable young man.

2. the Trocadero Dance Hall, New York.

1929

M. Bodenheim Sixty Seconds 236: A girl gets a mean idea down at the Troc’.

3. the Trocadero Music Hall, Sydney, Australia; or the Brisbane dancehall.

1946		D. Stivens Courtship of Uncle Henry 33: Let’s go back to the Troc.
1952		T.A.G. Hungerford Ridge and River (1966) 47: Hell, I used to go to the Troc [...] The Troc and the music, the lowlights and Selma!
1975		D. Malouf Johnno 29: Big dancehalls like Cloudland and the Troc.
2012		(con. 1943) G.S. Manson Coorparoo Blues [ebook] He was a regular at the Troc, when he could manage it.