Green’s Dictionary of Slang

1. prize-fighting, boxing, thus fibbing-match, a boxing match.

1812		Vaux Vocab. of the Flash Lang. in McLachlan (1964) 240: fibbing-match a boxing match.
1815		T. Moore ‘Epistle from Tom Cribb to Big Ben’ in Morn. Chron. 31 Aug. 3: The only one trick, good or bad, / Of the Fancy you’re up to, is fibbing, my lad.
1821		‘An Amateur’ Real Life in London I 440: Even little Sprites in lily whites, are fibbing it and rushing it, / Your dashing Swells from Bagnigge Wells, are flooring it and flushing it.
1837		R. Barham ‘Bagman’s Dog’ in Ingoldsby Legends (1840) 335: I say, could I borrow these Gentlemen’s Muses, / More skill’d than my meek one in ‘fibbings’ and bruises.

2. (prize-fighting) a beating, a series of blows.

1824		Emerald (N.Y.) 16 Oct. 109/1–2: Round 13. – Soon closed; a decent struggle, and severe fibbing. Kensett down.
1833		Bell’s Life in London 7 Apr. 3/3: Charles was again caught and met with a severe fibbing.
1845		Era (London) 26 Jan. 10/3: Plenty of fibbing at the ropes, which was of a very severe nature.
1848		Flash Dict. in Sinks of London Laid Open 106: Fibbing, pummelling a head while in chancery.
1857		Bell’s Life in Victoria (Melbourne) 23 May 4/1: [A]fter some spirited fibbing, they struggled for the fall.
1859		Matsell Vocabulum 126: fibbing. Short, quick blows when the parties are close to each other.
1860		‘Sayers’ and Heenan’s Great Fight’ in C. Hindley Curiosities of Street Lit. (1871) 124: Such fibbing and such up and down / Lor, how the swells did shout.
1864, 1867, 1870		Hotten Sl. Dict. 132: FIBBING, a series of blows delivered quickly, and at a short distance — Pugilistic.
1870		Aus. Town & Country Jrnl (Sydney) 26 Nov. 17/2: He then grappled with Brown [...] and got what is called in pugilistic slang, a fibbing for his pains.
1889		Times-Democrat (New Orleans, LA) 9 July 3/6: Prize Ring Slang [...] ‘fibbing,’ striking blows in quick succession at close quarters.
1873		Sl. Dict.

3. of a man, copulation.

183?

‘Paddy Whack’ in G. Speight (ed.) Bawdy Songs Early Music Hall 24: Young William threw Margery down on the floor, And with his stout gimblet began for to bore. But in the midst of his fibbing, and fumbling, and thumbing, ‘By my old smock,’ cries she, ‘there’s somebody coming’.