Green’s Dictionary of Slang

1. (also Georgie Moore) the floor; also in fig. use, in a bad way.

1857		‘Ducange Anglicus’ Vulgar Tongue 28: rory-o’more, n. Floor.
1873		Sl. Dict.
1932		‘P.P.’ Rhy. Sl. 9: A clip in the ‘Newingtons’ will do him a bit of ‘Robin Hood’ and put him on the Rory O’Moore.
1938		G. Kersh Night and the City 27: ‘How’s trade?’ ‘On the bleedn Rory O’Moore.’.
a.1945		L. Payne private coll. n.p.: Floor Rory O’More.
1953		J. Franklyn Cockney 293: His trouble and strife (wife) will soon pick him up off the Rory O’More (floor) and get him into Uncle Ned (bed).
1969		S.T. Kendall Up the Frog.
1976		(ref. to 1930s) R. Barnes Coronation Cups and Jam Jars 75: It was nothing to hear old Ted go bump in the night, right on the Rory O’Moore.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 13: She thinks of a score she’s had on the Georgie Moore when in pickling porks Wun Hung Low.
2002		Pete’s Aussie Sl. Home Page 🌐 Rory O’Moore: the floor.

2. a prostitute, i.e. a whore.

1873		Sl. Dict.
1953		J. Franklyn Cockney 294: When Liza is described as a Rory O’Moore, it is her character and possibly her calling that is indicated.
1978		Maledicta II:1+2 (Summer/Winter) 117: More examples are Pat and Mick = ‘prick’, Rory O’More = ‘whore’ (also scrubber, slag, etc.), and Alphonse = ponce (‘pimp’).
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.

3. a door.

1892		‘Doss Chiderdoss’ ‘The Rhyme of the Rusher’ in Sporting Times 29 Oct. n.p.: I fired him out of the Rory quick, / And he fell on his I suppose.
1908		‘Doss Chiderdoss’ ‘Significant Strains’ in Sporting Times 9 May 1/3: Before they fully realised how matters really stood, / Bill and I dashed through the ‘Rory’ with a grin.
1910		‘Doss Chiderdoss’ ‘The Dear Loaf’ Sporting Times 29 Jan. 1/4: [I] was just about to settle down to read / When a knock came at the ‘Rory,’ and I opened it, and saw / A poor bloke down on his luck, and down at heel.
1910		Eve. Teleg. (Dundee) 3 Aug. 4/1: Two men in the four-ale bar commence 'reading and writing' and he helps the landlord to bundle them through the rory [...] 'Rory O'More' (door).
1923		Eve. Teleg. (Dundee) 11 July 11/4: Rory o'Moore, a door.
1923		Smith’s Wkly (Sydney) 11 Aug. 15/2: Effect entrance either by door or window. In the case of the Rory o’ More, a skeleton turn wlll do the trick.
1936		J. Curtis Gilt Kid 178: ‘Some lousy berk must have been snooping around the place and found that rory open.’ ‘You mean that door at the top?’.
1946		St Vincent Troubridge ‘Some Notes on Rhyming Argot’ in AS XXI:1 Feb. 46: i desire. A fire. (English, 1900.) Anna Maria is ten times as usual. The best known poem in rhyming slang begins: As I sat in front of the Anna Maria, / Warming me plates of meat, / There came a knock at the Rory O’More / That made me old raspberry beat.
1960		J. Franklyn Dict. of Rhy. Sl.
1975		Bulletin (Sydney) 26 Apr. 46: Rhyming slang did filter through into the idiom, but the knock-abouts quickly turned most of the phrases into shortened versions – Gregory (short for Gregory Peck: neck): the Rory (short for Rory O’More: the door).
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 41: Rory O’Moore door.
2001		M. Coles Bible in Cockney 17: You’re to put a big Rory in the side.

4. (Aus.) the number four.

1983

R. Aven-Bray Ridgey-Didge Oz Jack Lang 41: Rory O’Moore [...] four.