Pronunciation: (blOO'bel"),[key] —n. 1. any of numerous plants of the bellflower family, having blue, bell-shaped flowers, as a bellflower or harebell.
2. Also called wood hyacinth. an Old World plant, Endymion non-scriptus, of the lily family, having blue, bell-shaped flowers.
3. any of various other plants having blue flowers, as those of the genus Mertensia.