DELPHINIUM

noun Etymology: New Latin, genus name, from Greek delphinion larkspur, diminutive of delphin-, delphis dolphin; probably from the shape of the nectary Date: 1664 any of a large genus ( Delphinium ) of the buttercup family that comprises chiefly perennial erect branching herbs with palmately divided leaves and irregular flowers in showy spikes and includes several that are poisonous