EMERALD a.
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. -- Em…
ENGINEER CORPS; CORPS OF ENGINEERS n.
for land and seacoast defense, the improvement of rivers and harbors, the construction of lighthouses, etc., and, in time of war, supervises the engineering operations of the armies in the field.