Definition: emerald

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Source: WordNet (r) 1.7 

emerald
     n 1: a green transparent form of beryl; highly valued as a
          gemstone
     2: a transparent piece of emerald that has been cut and
        polished and is valued as a precious gem
     3: the green color of an emerald

Source: Webster's Revised Unabridged Dictionary (1913) 

Emerald \Em"er*ald\, n. [OE. emeraude, OF. esmeraude, esmeralde,
   F. ['e]meraude, L. smaragdus, fr. Gr. ?; cf. ?kr. marakata.]
   1. (Min.) A precious stone of a rich green color, a variety
      of beryl. See Beryl.

   2. (Print.) A kind of type, in size between minion and
      nonpare?l. It is used by English printers.

   Note: [hand] This line is printed in the type called emerald.
Emerald \Em"er*ald\, a.
   Of a rich green color, like that of the emerald. ``Emerald
   meadows.'' --Byron.

   Emerald fish (Zo["o]l.), 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.
Beryl \Ber"yl\ (b[e^]r"[i^]l), n. [F. b['e]ryl, OF. beril, L.
   beryllus, Gr. bh`ryllos, prob. fr. Skr. vai[dsdot][=u]rya.
   Cf. Brilliant.] (Min.)
   A mineral of great hardness, and, when transparent, of much
   beauty. It occurs in hexagonal prisms, commonly of a green or
   bluish green color, but also yellow, pink, and white. It is a
   silicate of aluminium and glucinum (beryllium). The
   aquamarine is a transparent, sea-green variety used as a
   gem. The emerald is another variety highly prized in
   jewelry, and distinguished by its deep color, which is
   probably due to the presence of a little oxide of chromium.

Source: The Free On-line Dictionary of Computing (2003-OCT-10) 

Emerald

   An object-oriented distributed programming language and
   environment developed at the University of Washington in the
   early 1980s.  Emeral was the successor to EPL.  It is
   strongly typed and uses signatures and prototypes rather
   than inheritance.

   ["Distribution and Abstract Types in Emerald", A. Black et al,
   IEEE Trans Soft Eng SE-13(1):65-76 (Jan 1987)].

   (1994-11-09)

Source: U.S. Gazetteer (1990) 

Emerald, PA
  Zip code(s): 18080
Emerald, WI
  Zip code(s): 54012

Source: Easton's 1897 Bible Dictionary 

Emerald
   Heb. nophek (Ex. 28:18; 39:11); i.e., the "glowing stone",
   probably the carbuncle, a precious stone in the breastplate of
   the high priest. It is mentioned (Rev. 21:19) as one of the
   foundations of the New Jerusalem. The name given to this stone
   in the New Testament Greek is smaragdos, which means "live
   coal."