Troll \Troll\, n. [Icel. troll. Cf. {Droll}, {Trull}.] (Scand. Myth.) A supernatural being, often represented as of diminutive size, but sometimes as a giant, and fabled to inhabit caves, hills, and like places; a witch. {Troll flower}. (Bot.) Same as {Globeflower} (a) .