ˈthapsēə noun
Etymology: New Latin, from Latin, a poisonous plant, from Greek, from Thapsos, town and peninsula in Sicily
1. -s : a plant of the genus Thapsia ; especially : deadly carrot
2. capitalized : a small genus of herbs (family Umbelliferae) of the Mediterranean region having the flowers in compound umbels without involucres and the fruit broadly winged