turnsole

• POS: Noun
• HYPHEN: turn=sole

CIDE DICTIONARY

turnsole, n. [F. tournesol, It. tornasole; tornare to turn (LL. tornare) + sole the sun, L. sol. See Turn, Solar, a., and cf. Heliotrope.].

•  A plant of the genus Heliotropium; heliotrope; -- so named because its flowers are supposed to turn toward the sun.  [1913 Webster]
•  Litmus.  [1913 Webster]

OXFORD DICTIONARY

turnsole, n. any of various plants supposed to turn with the sun.

Etymology

OF tournesole f. Prov. tournasol f. L tornare TURN + sol sun