Green’s Dictionary of Slang

1. an act of sexual intercourse.

1971		(con. WWII) B. Aldiss Soldier Erect 124: Where are the birds? We want three as are fit enough to stand a gude shafting.
1981		W. Boyd ‘Hardly Ever’ in On the Yankee Station (1982) 38: ‘Wor! Think of it waiting [...] The shafting, Nilo my man,’ he said intensely. ‘The royal bloody shafting we’re going to do.’.
2001		P. Meditzy ‘A Day In The Life Of...’ 29 Apr. 🌐 I must have ‘given her a right good shafting’ as well because when she got up to visit the loo she was ‘walking like John Wayne’.

2. unfair treatment.

1961		W.R. Burnett Round the Clock at Volari’s 101: ‘I’ve been transferred to Smoketown as of this morning.’ ‘That’s a lousy shafting, Pat’.
1967		E. Shepard Doom Pussy 22: Some newsmen have been giving the Marines a real shafting.

3. a stabbing.

2002

J. Cameron Hell on Hoe Street 24: Give a shafting with a sticker, give a whacking with a rice flail.