Green’s Dictionary of Slang

(Aus.) a mixture of petrol and pepper allegedly once popular in the Sydney Domain (see also cite 1929).

1929		Smith’s Wkly (Sydney) 26 Oct. 12/5: Domain Cocktail The bleary-eyed park-bencher [...] mumbled confidentially: ‘Look, this is a valuable secret I’m Iettlng you into. Metho gets a bonzer kick if you mix it with a bit of boot polish’.
1936		in Baker Aus. Lang. (1945) 166: Here is a group of recipes as published by an outback newspaper in 1936 [...] Methylated spirits, ginger beer and a teaspoon of bootpolish. (This is the Fitzroy or Doman cocktail).
1941		Baker Popular Dict. Aus. Sl. 24: Domain cocktail (or special), a lethal concoction of petrol and pepper which reputedly once had a vogue among deadbeat drinkers in the Sydney Domain. Domain dosser, a loafer or down-and-out who frequents the Sydney Domain.
1946		Cairns Post (Qld) 15 Jan. 7/5: Methylated spirits, ginger beer and a teaspoon of boot polish. In dead-beat parlance this is called a Fitzroy Cocktail or a Domain Cocktail.

(Aus.) a loafer or down-and-out in that area.

1884		Sthn. Argus (Goulburn, NSW) 24 May 2/4: [A] herd of park prowlers aud Domain dossers who crushed the honest laborer out.
1891		Nat. Advocate (Bathurst, NSW) 5 Jan. 2/6: There is no more money moving than may be found in the pockets of a Domain dosser after a park policeman has run the rule over him,.
1904		Sydney Sportsman (Surry Hills, NSW) 12 Oct. 3/6: Drytown— a place where the whisky is so umpty-doo that a Sydney domain dosser wouldn’t gargle it.
1910		Bulletin (Sydney) 29 Sept. 13/3: For indolent habits and downright laziness the Outback hut-keeper ranks second only to a Domain dosser.
1920		Dubbo Dispatch (NSW) 23 July 5/3: To the average citizen that so-and-so has forecasted that it will be a good or bad season Is as irritating is mentioning work to a Domain dosser.
1930		Eve. News (Rockhampton, Qld) 14 Aug. 2/4: Joy was brought to Sydney.’s unemployed and homeless last night when Mr. F: Stewar [...] arranged a meal for 200 Domain dossers.
1946		Sydney Morn. Herald 14 Dec. 11/3: Until recent years, ‘Domain dosser’ was a household phrase, and even now it conjures up a memory of the caves and crannies along Woolloomooloo Bay, garnished with scraps of iron and timber.
1951		Sun (Sydney) 31 Mar. 5/6: [H]e stood over the youngster until the cigar was a butt even a Domain dosser would ignore.

a soap-box orator who frequents the Sydney Domain, the equivalent of London’s Speakers’ Corner.

1883		Eve, News (Sydney) 10 Dec. 3/1: A certain Domain spouter, who is employing his Sundays to bring himself into notice, with a view to a seat in the ’Ouse.
1891		Hay Standard (NSW) 5 Sept. 3/1: [A]a new Parliament of bush lawyers, taproom politicians, and domain spouters.
1902		‘Dads Wayback’ in Sun. Times (Sydney) 26 Oct. 5/5: [headline] domain spoters a blessing [...] Them coves on ther stump in ther Domain in Sydney [...] they’s public eddicators as can’t be beat.