Douglas Harper's Etymology Dictionary
teonanacatl
native name for a hallucinogenic fungi (Psilocybe mexicana) found in Central America, 1875, from Nahuatl (Aztecan), from teotl "god" + nancatl "mushroom."
Usage examples of "teonanacatl".
The small black mushrooms were called teonanacatl, "flesh of the gods," which indicates how scarce and precious they were.