sə̇.ˈkyüd.ə noun
Etymology: New Latin, from Latin, poison hemlock (probably Conium maculatum )
1. capitalized : a small genus of perennial herbs (family Umbelliferae) having tuberous usually fascicled deadly poisonous roots and the leaves twice or thrice pinnate or ternate — see poison hemlock , water hemlock
2. -s
[Latin]
: poison hemlock 1