n.
Pronunciation: ˌ pi-kr ō - ' täk-s ə n
Function: noun
Etymology: International Scientific Vocabulary
Date: 1815
: a poisonous bitter crystalline stimulant and convulsive substance C 30 H 34 O 13 obtained from the berry of a southeast Asian vine ( Anamirta cocculus) and used intravenously as an antidote for barbiturate poisoning