Psilocybin Definition

sĭlə-sībĭn, sīlə-
noun
A hallucinogenic drug obtained from a fungus (genus Psilocybe, esp. P. mexicana)
Webster's New World

A hallucinogenic alkaloid, C₁₂H₁₅Nâ‚‚O·Hâ‚‚PO₃, present in several species of Central American mushroom and producing effects similar to LSD.

Wiktionary
Synonyms:

Origin of Psilocybin

  • After German Psilocybin (coined by Albert Hofmann), from modern Latin psilocybe, from Greek ψιλός "˜smooth' + κύβη "˜head'.

    From Wiktionary

  • New Latin Psīlocybē mushroom genus (Greek psīlos bare) (Greek kubē head) –in

    From American Heritage Dictionary of the English Language, 5th Edition