Green’s Dictionary of Slang

1. a house, apartment or room in which addicts gather to inject drugs.

1975

Hardy & Cull Drug Lang. and Lore.

2. a detoxification ward.

1967		Maurer & Vogel Narcotics and Narcotic Addiction (3rd edn).
1969		R.R. Lingeman Drugs from A to Z (1970).