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2 definitions found
 for Black amber
From The Collaborative International Dictionary of English v.0.48 :

  Jet \Jet\, n. [OF. jet, jayet, F. ja["i]et, jais, L. gagates,
     fr. Gr. ?; -- so called from ? or ?, a town and river in
     Lycia.] [written also jeat, jayet.] (Min.)
     A variety of lignite, of a very compact texture and velvet
     black color, susceptible of a good polish, and often wrought
     into mourning jewelry, toys, buttons, etc. Formerly called
     also black amber.
     [1913 Webster]
  
     Jet ant (Zool.), a blackish European ant ({Formica
        fuliginosa), which builds its nest of a paperlike
        material in the trunks of trees.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Amber \Am"ber\ ([a^]m"b[~e]r), n. [OE. aumbre, F. ambre, Sp.
     ['a]mbar, and with the Ar. article, al['a]mbar, fr. Ar.
     'anbar ambergris.]
     1. (Min.) A yellowish translucent resin resembling copal,
        found as a fossil in alluvial soils, with beds of lignite,
        or on the seashore in many places. It takes a fine polish,
        and is used for pipe mouthpieces, beads, etc., and as a
        basis for a fine varnish. By friction, it becomes strongly
        electric.
        [1913 Webster]
  
     Note: Amber is classified as a fossil resin, being typically
           of ancient origin, having solidified from the exudates
           of certain trees millions of years ago. Many pieces are
           found with insects embedded, the insects having been
           trapped by the resin while they were alive. The insects
           are often very well preserved, due to the antimicrobial
           action of components of the amber. It typically
           contains from 5 to 8 percent of succinic acid. "Baltic
           amber" has been mined for centuries in the region of
           Poland formerly called East Prussia, and is the variety
           used in most jewelry made in Poland and Russia. The
           Baltic strata containing amber extend under the sea,
           and amber beads may be found there deposited by waves
           along the shore. Amber was known to the ancient Greeks.
           The name "electron" comes from the Latin word for
           amber, electrum, derived from the Greek word,
           'h`lektron (see electric), due to the electric charge
           that amber takes when rubbed, as with cat fur. Although
           at one time used in fine varnishes, it no longer has
           any commercial value for that purpose, being used
           mostly in jewelry. Significant deposits are also found
           in the Carribean region, and smaller amounts in various
           other places. The notion, that DNA sufficiently intact
           to recreate extinct animals might be extracted from
           amber, was the basis for Michael Crichton's novel
           "Jurassic Park", but has as yet (1997) not been
           demonstrated to be possible.
           [PJC]
  
     2. Amber color, or anything amber-colored; a clear light
        yellow; as, the amber of the sky.
        [1913 Webster]
  
     3. Ambergris. [Obs.]
        [1913 Webster]
  
              You that smell of amber at my charge. --Beau. & Fl.
        [1913 Webster]
  
     4. The balsam, liquidambar.
        [1913 Webster]
  
     Black amber, and old and popular name for jet.
        [1913 Webster]

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