- Any fungus in the genus Claviceps which are parasitic on grasses.
- The sclerotium (wintering stage) of certain fungi in the genus Claviceps, appearing as a deformed grain in certain cereals and grasses infected by the fungi.
- 1980, Albert Hofmann; Jonathan Ott (translator), chapter 1, in LSD, My Problem Child, McGraw-Hill, →ISBN:
- Ergot first appeared on the stage of history in the early Middle Ages, as the cause of outbreaks of mass poisonings affecting thousands of persons at a time. The illness, whose connection with ergot was for a long time obscure, appeared in two characteristic forms, one gangrenous (ergotismus gangraenosus) and the other convulsive (ergotismus convulsivus).
any fungus of the genus Claviceps
ergot m (plural ergots)