EMERALD

I. noun Etymology: Middle English emerallde, from Anglo-French esmeralde, from Vulgar Latin *smaralda, from Latin smaragdus, from Greek smaragdos Date: 14th century a rich green variety of beryl prized as a gemstone, any of various green gemstones (as synthetic corundum or demantoid), II. adjective Date: 1508 brightly or richly green