he·li·o·trope / ˈhēlēəˌtrōp/ • n. a plant (genus Heliotropium) of the borage family, cultivated for its fragrant purple or blue flowers, which are used in perfume. ∎  a light purple color, similar to that typical of heliotrope flowers.

heliotrope plant of which the flowers turn towards the sun, e.g. formerly, sunflower, marigold, now the genus Heliotropium. XVII. — L. hēliotropium — Gr. hēliotrópion, f. hēlios SUN + -tropos turning.

Heliotrope

A plant that follows the sun with its flowers and leaves and is popularly known as "turnsole." Heliotrope was believed to render its possessor invisible if the body was rubbed all over with the juice of this herb, which was also reputed to stop bleeding and avert danger from poison.