Green’s Dictionary of Slang

1. a psilocybe or ‘magic’ mushroom.

1973		Wesson & Smith Uppers and Downers.
1977		S.F. Examiner 15 Sept. 4/4: Where did the spores come from? [...] In US psychedelic drug circles, psilocybin has long occupied a revered place.

2. phencyclidine.

1984		Abel Dict. Drug Abuse Terms.
2001		ONDCP Street Terms 20: Spores — PCP.