Green’s Dictionary of Slang

1. Tattersall’s horse repository and betting rooms, orig. sited at Hyde Park Corner, London.

1843		R.S. Surtees Handley Cross (1854) 146: A line to the Corner will find me.
1853		R.S. Surtees Mr Sponge’s Sporting Tour 4: To the frequenters of the ‘corner’, it were almost superfluous to mention that he is a constant attender [...] Tattersall will hail him from his rostrum.
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.

2. (Aus.) the junction of the states of Queensland, South Australia and New South Wales; also attrib.

1891		Quiz (Adelaide) 20 Mar. 7/2: The great jaw man of the Corner [AND].
1928		A.W. Upfield House of Cain 84: It will be all of a fortnight before we strike ‘The Corner’ of N.S.W.
1932		‘William Hatfield’ Ginger Murdoch 1: Birdsville, Bedourie, and Betoota [...] form a rough triangle and The Corner proper, and its border, unlike the arbitrary State divisions, is flexible and undefined, so that folk as far away as Goyder’s Lagoon down in South Australia [...] may claim without dispute to belong to The Corner.
1945		Baker Aus. Lang.
1981		Sydney Morning Herald 5 Sept. 12: Today is Tibooburra’s day, and best wishes to it from all of us. The faraway little capital of The Corner country, 425 km west of Bourke and near the junction of the NSW, South Australian and Queensland borders, is celebrating its centenary [GAW4].