ˌvin(t)səˈtäksə̇kəm noun
Usage: capitalized
Etymology: New Latin, from Latin vincere to conquer + toxicum poison; from the former belief that it was a counterpoison — more at toxic
: a large genus of chiefly tropical American vines (family Asclepiadaceae) having cordate leaves and large purple or greenish cymose flowers with the corolla rotate and 5-parted and an entire or lobed crown — see negro vine