Definition of "heliotrope"
heliotrope
/ˈhiː.li.ə.tɹəʊp/
noun
countable and uncountable, plural heliotropes
(countable, botany, also figuratively) A plant with flowers which turn to face and follow the sun, such as (archaic) marigolds and sunflowers.
(specifically) A plant of the genus Heliotropium, especially the common heliotrope (Heliotropium arborescens) which has clusters of purple flowers with a strong fragrance.
(uncountable) The fragrance of Heliotropium arborescens flowers, or a scent resembling this fragrance.