Source : Webster's Revised Unabridged Dictionary (1913)

Trace \Trace\, n. [F. trace. See {Trace}, v. t. ]
   1. A mark left by anything passing; a track; a path; a
      course; a footprint; a vestige; as, the trace of a
      carriage or sled; the trace of a deer; a sinuous trace.
      --Milton.

   2. (Chem. & Min.) A very small quantity of an element or
      compound in a given substance, especially when so small
      that the amount is not quantitatively determined in an
      analysis; -- hence, in stating an analysis, often
      contracted to tr.

   3. A mark, impression, or visible appearance of anything left
      when the thing itself no longer exists; remains; token;
      vestige.

            The shady empire shall retain no trace Of war or
            blood, but in the sylvan chase.       --Pope.

   4. (Descriptive Geom. & Persp.) The intersection of a plane
      of projection, or an original plane, with a coordinate
      plane.

   5. (Fort.) The ground plan of a work or works.

   {Syn}.-Vestige; mark; token. See {Vestige}.

Calumniate \Ca*lum"ni*ate\, v. i. [imp. & p. p. {Calumniated};
   p. pr. & vb. n. {calumniating}.] [L. calumniatus, p. p. of
   calumniari. See {Calumny}, and cf. {Challenge}, v. t.]
   To accuse falsely and maliciously of a crime or offense, or
   of something disreputable; to slander; to libel.

         Hatred unto the truth did always falsely report and
         calumniate all godly men's doings.       --Strype.

   {Syn}. -- To asperse; slander; defame; vilify; traduce;
      belie; bespatter; blacken; libel. See {Asperse}.

Citadel \Cit"a*del\, n. [F. citadelle, It. citadella, di?. of
   citt? city, fr. L. civitas. See {City}.]
   A fortress in or near a fortified city, commanding the city
   and fortifications, and intended as a final point of defense.

   {Syn}. -- Stronghold. See {Fortress}.

Source : Free On-Line Dictionary of Computing

SYN
     
        1.  {Synchronous idle}.
     
        2.  A syntactic specification language for {COPS}.
     
        ["Metalanguages of the Compiler Production System COPS",
        J. Borowiec, in GI Fachgesprach "Compiler-Compiler", ed
        W. Henhapl, Tech Hochs Darmstadt 1978, pp. 122-159].
     
        3. [TCP/IP SYN request?]
     
        (1996-04-17)