Pronunciation: (em'ur-uld, em'ruld),[key] —n. 1. a rare variety of beryl that is colored green by chromium and valued as a gem.
2. See emerald green. 3. Print.(in Britain) a 6½-point type of a size between nonpareil and minion.
4. Ornith.any of numerous small bright green hummingbirds of the genus Chlorostilbon.