EMERALD

Of a rich green color, like that of the emerald. "Emerald meadows." Byron. Emerald fish (Zoöl.), a fish of the Gulf of Mexico (Gobionellus oceanicus), remarkable for the brilliant green and blue color of the base of the tongue; -- whence the name; -- called also esmeralda. -- Emerald green, a very durable pigment, of a vivid light green color, made from the arseniate of copper; green bice; Scheele's green; -- also used adjectively; as, emerald green crystals. -- Emerald Isle, a name given to Ireland on account of the brightness of its verdure. -- Emerald spodumene, or Lithia emerald. (Min.) See Hiddenite. -- Emerald nickel. (Min.) See Zaratite.