Eū'ca-lýp'tus, n.

n. [Gr. εὖ, well, and καλύπτειν, to cover.] (Bot.) A genus of trees, including many species, most of which are natives of Australia. The trees, which attain a very great size, have entire, leathery leaves, containing a considerable amount of volatile oil, and remarkable for being placed upright, so that both sides are equally exposed to the light.