Green’s Dictionary of Slang

arsenal n.

[SE arsenal]

1. (US drugs) a supply of narcotics concealed in the rectum (usu. in some form of metal container) [play on arse n. (1)].

[US]J.E. Schmidt Narcotics Lingo and Lore.

2. any stock of drugs in one’s possession.

[US]J.E. Schmidt Narcotics Lingo and Lore.

3. the genitals.

[UK]Amatory Ink 🌐.