Green’s Dictionary of Slang

1. (US Und.) to wrestle.

1859		Matsell Vocabulum.
1881		Trumble Sl. Dict. (1890).

2. to steal, esp. watches, by snatching items from their owners (rather than carefully picking a pocket), often using violent means, e.g. garrotting; thus flimping n.

1839		W.A. Miles Poverty, Mendicity and Crime; Report 111: To take a man’s watch is to ‘flimp him,’ it can only be done in a crowd, one gets behind and pushes him in the back, while the other in front is robbing him.
1857		‘Ducange Anglicus’ Vulgar Tongue 38: He told me as Bill had flimped a yack and pinched a swell of a fawney.
1865		Leaves from Diary of Celebrated Burglar 65/2: It was a regular pull-away affair, more like ‘flimping’ than anything else.
1870		Hotten Sl. Dict.
1882		Sydney Sl. Dict. 9/2: Sue flimped a soot bag and a prop. She’s the flyest wire in the mob, and all the family men are spoony on her. Sue stole a reticule and a brooch. She’s the smartest lady’s pocket thief in the company (or ‘school’), and all the thieves are smitten with her.
1896		A. Morrison Child of the Jago (1982) 128: They were flimped of their kicksies, benjies, or daisies, as the case might be.
1901		W.S. Walker In the Blood 143: I scorn to ‘flimp’ or ‘hold,’ on ‘dragging’ I ain’t bold. [Ibid.] 158: ‘Dew-dropping,’ ‘dragging down or ‘flimpings’ more in our line.
1906		A.H. Lewis Confessions of a Detective 202: Then I flimped his thimble—a yellow one.

3. (US Und.) to garrotte.

1859		Matsell Vocabulum.
1862		Morn. Post 18 Dec. 3/3: ‘Flimping and faking,’ garrotting and pocket-picking.

4. to have sexual intercourse.

1937–84

Partridge DSUE (1984) 406/2: [...] from ca. 1850.

5. to swindle, to cheat.

1925		(con. WWI) Fraser & Gibbons Soldier and Sailor Words 96: Flimp, To: To swindle.
1956		‘Charles Raven’ Und. Nights 185: I bet you’ve flimped on every flipping tickle we’ve had; but this is your lot, you flipping bleeding crab, you.