What is the meaning of Dandelion?

Any of the several species of plant in the genus Taraxacum, characterised by yellow flower heads and notched, broad-ended leaves, especially the common dandelion (Taraxacum officinale).

The flower head or fruiting head of the dandelion plant.

A yellow colour, like that of the flower.

Of a yellow colour, like that of the flower.

Source: wiktionary.org