Green’s Dictionary of Slang

1. Jewish; thus long-nosed ’un, a Jew.

1836		Westmorland Gaz. 9 July 1/5: When you describe me you describe every Jew. When you call me [...] a long-nosed, meagre-looking fellow, you point at the whole fraternity.
1900		Bulletin (Sydney) 8 Sept. 26/1: S.A. law made an exhibition of itself over its latest attempt to put down the illegal bookmaker. The police employed agents, who went round and made bets with the unlawful bag-carriers, and then they prosecuted the long-nosed brigade wholesale.
1908		Sporting News 17 Sept. in Fleming Unforgettable Season (1981) 224: The long-nosed rooters are crazy whenever young Herzog does anything noteworthy. Cries of ‘[...] Goot poy, Herzog!’ go up. [Ibid.] 8 Oct. 305: The longnosed rooters who have made the Polo Grounds [...] look like the market place in Jerusalem.
1915		Liverpool Echo 5 Nov. 8/6: ‘The long-nosed ’uns are buying now,’ remarked the observant broker.
1924		Dly News (Perth) 12 Nov. 10/4: [headline] AMONG THE EPITAPHS. DISGRACEFUL GRAVESIDE SCENE. ‘YOU LONG-NOSED JEW.’ ‘YOU DIRTY IRISH COW’ ‘Irish Cows’ and ‘long-nosed Jews'’ were frequently mentioned at the City Court to-day when the P.M. [...] was asked to decide who was responsible for an altercation alongside an open grave in the Karrakatta Cemetery.
1937		R. Westerby Wide Boys Never Work (1938) 193: You know Lew – long-nosed bastard, worked for Benny once.
1943		M. Harrison Reported Safe Arrival 109: They [...] go ’rahn collectin’ ’igh-up blokes jus’ ter decide wevver I done right ter ’it young Buttsy fer callin’ me a long-nose’ monk.

2. (Aus.) an epithet used to imply contempt; the implication is of unwanted interference.

1906		Sun. Times (Perth) 14 Oct. 1/1: The long-nosed city Health Inspector is developing much swelled head.
1910		C.E.W. Bean On the Wool Track 223: ‘You lazy, long-nose scoundrel,’ I said, facing him.
1926		Truth (Perth) 20 Nov. 10/3: I have no sympathy with the long-nosed individual who [...] denounces the dance as beguilement of His inflammatory Majesty for the damnation of man kind.
1936		Mercury (Hobart, Tas.) 1 Aug. 13/2: Witness said that the trooper also said: ‘You want a punch in the jaw, you long-nosed — .’ Trooper Yard then punched him and he went down.
1951		Illawarra Dly Mercury (Wollongong, NSW) 24 Feb. 11/2: So the long-nosed busy bodies are at it again. They have ‘smelled out’ two ‘flagrant’ instances of men drinking beer in public places.

3. supercilious, arrogant, upper-class.

1882		parody of W.S. Gilbert in Yorks Gaz. 28 Jan. 2/6: [on Joseph Chamberlain] A very long-nosed young man, / An evil-disposed young man.
1920		Westralian Worker (Perth) 16 Apr. 7/6: I saw a long-nosed, greedy-looking fellow putting tenners on her. 1 don’t want that type of person to back my horses.
1922		Joyce Ulysses 715: Id like to have tattered them down off him before all the people and give him what that one calls flagellate [...] only for that longnosed chap I don’t know who he is with that other beauty Burke out of the City Arms hotel was there spying.
1967		J. Orton Diaries (1986) 27 June 222: I thought, What a long-nosed ponce.