bouncing powder, n. — Green’s Dictionary of Slang

bouncing powder n.

[the effect it has on its temporarily enlivened users]

(drugs) cocaine.

1935		A.J. Pollock Und. Speaks.
1953		Anslinger & Tompkins Traffic In Narcotics 306: bouncing powder. Cocaine.
1969		R.R. Lingeman Drugs from A to Z (1970) 50: bouncing powder cocaine.
1971		E.E. Landy Underground Dict. (1972).
2001		ONDCP Street Terms 4: Bouncing powder — Cocaine.