Green’s Dictionary of Slang

1. (W.I./Rasta) the upper classes.

2004

‘Patois Dict.’ www.dancehallareaz.com 🌐.

2. (US drugs) cocaine, always considered the drug of the more affluent.

1980

‘Gloss. of Drug Terms’ National Instit. Drug Abuse.

3. (N.Z. prison) amphetamine.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 197/1: uptown n. an amphetamine, e.g. speed; the effect derived from taking an amphetamine.