Green’s Dictionary of Slang

1. (UK Und.) an immediate dumping ground for recently stolen property before it is shared out, also tools and equipment used in a robbery, before being hidden more permanently, e.g. in a hired lock-up.

1970		‘Metropolitan Police Sl.’ in P. Laurie Scotland Yard (1972) 327: slaughter, a: a concealed site where thieves divide the cargoes of stolen lorries.
1977		D. Powis Signs of Crime 201: Slaughter, A place temporarily to hide property recently stolen.
2004		N. ‘Razor’ Smith A Few Kind Words and a Loaded Gun 12: The slaughter was paid for in cash and hired under a false name [...] Danny volunteered to deposit the happy-bag in the slaughter.
2016		Vanity Fair 16 Mar. 🌐 The thieves had surely divided up the spoils into easily transportable lots once inside “the slaughter,” as their hideaway would have been called in London gangster argot.

2. a house; one’s home.

2011		J.J. Connolly Viva La Madness 48: Roy electronically swept the motor, and his slaughter daily for bugs.
2011		J.J. Connolly Viva La Madness 117: Roy drives northwards to Sonny’s bijou slaughtrer.