What does "larkspur" mean?

A delphinium: any plant of the genus Delphinium, especially Delphinium ajacis and other plants of the subgenus Delphinium subg. Consolida

Larkspur

Common synonyms include: blue purple, consolida, delphinium, delphiniums, larkspur blue, poisonous plant.

name, noun

name, noun ·2 syllables ·Rare ·Advanced level

Noun

1
A delphinium: any plant of the genus Delphinium, especially Delphinium ajacis and other plants of the subgenus Delphinium subg. Consolida countable, uncountable
2
any of numerous cultivated plants of the genus Delphinium wordnet

Proper Noun

1
A place in Canada:; A neighbourhood in south-east Edmonton, Alberta.
2
A place in Canada:; A summer village in Westlock County, Alberta.
3
A place in the United States:; A city in Marin County, California.
4
A place in the United States:; A home rule municipality in Douglas County, Colorado, named for the presence of larkspur.
5
A place in the United States:; A neighbourhood of Virginia Beach, Virginia, named for the larkspur.

"The article about planting larkspur neglected to mention how the flowers could be deadly if eaten."

From lark + spur, so named for the spur's shape, which resembles the hind toe of a lark.