- A plant of the genus Heliotropium; heliotrope; -- so
named because its flowers are supposed to turn toward the sun. - The sunflower. - A kind of spurge (Euphorbia Helioscopia). - The euphorbiaceous plant Chrozophora tinctoria. - Litmus. - A purple dye obtained from the plant turnsole. See def. 1
(d).
Definition
[ a.]