alkanet

noun

1. 1.Alkanna tinctoria, a plant whose root is used as a red dye.
2. 2.The dyeing matter extracted from the plant, giving a deep red colour.
3. 3.Other plants of the genus Alkanna.
4. 4.Anchusa officinalis (common bugloss), a similar plant.
5. 5.Anchusa ochroleuca (yellow alkanet).