Source : Webster's Revised Unabridged Dictionary (1913)

Garnet \Gar"net\, n. [Etymol. unknown.] (Naut.)
   A tackle for hoisting cargo in our out.

   {Clew garnet}. See under {Clew}.

Garnet \Gar"net\, n. [OE. gernet, grenat, OF. grenet,grenat, F.
   grenat, LL. granatus, fr. L. granatum pomegranate, granatus
   having many grains or seeds, fr. granum grain, seed. So
   called from its resemblance in color and shape to the grains
   or seeds of the pomegranate. See {Grain}, and cf. {Grenade},
   {Pomegranate}.] (Min.)
   A mineral having many varieties differing in color and in
   their constituents, but with the same crystallization
   (isometric), and conforming to the same general chemical
   formula. The commonest color is red, the luster is vitreous,
   and the hardness greater than that of quartz. The
   dodecahedron and trapezohedron are the common forms.

   Note: There are also white, green, yellow, brown, and black
         varieties. The garnet is a silicate, the bases being
         aluminia lime (grossularite, essonite, or cinnamon
         stone), or aluminia magnesia (pyrope), or aluminia iron
         (almandine), or aluminia manganese (spessartite), or
         iron lime (common garnet, melanite, allochroite), or
         chromium lime (ouvarovite, color emerald green). The
         transparent red varieties are used as gems. The garnet
         was, in part, the carbuncle of the ancients. Garnet is
         a very common mineral in gneiss and mica slate.

   {Garnet berry} (Bot.), the red currant; -- so called from its
      transparent red color.

   {Garnet brown} (Chem.), an artificial dyestuff, produced as
      an explosive brown crystalline substance with a green or
      golden luster. It consists of the potassium salt of a
      complex cyanogen derivative of picric acid.

Source : WordNet®

garnet
     n : any of a group of hard glassy minerals (silicates of various
         metals) used as gemstones and as an abrasive

Source : Free On-Line Dictionary of Computing

Garnet
     
        1. A graphical object editor and {Macintosh} environment.
     
        2. A user interface development environment for {Common Lisp}
        and {X11} from The Garnet project team.  It helps you create
        graphical, interactive user interfaces.
     
        Version 2.2 includes the following: a custom {object-oriented
        programming} system which uses a {prototype-instance model}.
        automatic {constraint} maintenance allowing properties of
        objects to depend on properties of other objects and be
        automatically re-evaluated when the other objects change.  The
        constraints can be arbitrary Lisp expressions.  Built-in,
        high-level input event handling.  Support for {gesture
        recognition}.  {Widget}s for multi-font, multi-line,
        mouse-driven text editing.  Optional automatic layout of
        application data into lists, tables, trees or graphs.
        Automatic generation of {PostScript} for printing.  Support
        for large-scale applications and data {visualisation}.
     
        Also supplied are: two complete widget sets, one with a
        {Motif} {look and feel} implemented in {Lisp} and one with a
        custom {look and feel}.  Interactive design tools for creating
        parts of the interface without writing code: Gilt interface
        builder for creating {dialog box}es.  Lapidary interactive
        tool for creating new {widget}s and for drawing
        application-specific objects.  C32 {spreadsheet} system for
        specifying complex {constraint}s.
     
        Not yet available: Jade automatic dialog box creation system.
        Marquise interactive tool for specifying behaviours.
     
        {(ftp://a.gp.cs.cmu.edu/usr/garnet/garnet)}.
     
        (1999-07-02)