Source : Webster's Revised Unabridged Dictionary (1913)

Chord \Chord\, v. t. [imp. & p. p. {Chorded}; p. pr. & vb. n.
   {Chording}.]
   To provide with musical chords or strings; to string; to
   tune.

         When Jubal struck the chorded shell.     --Dryden.

         Even the solitary old pine tree chords his harp.
                                                  --Beecher.

Chord \Chord\, v. i. (Mus.)
   To accord; to harmonize together; as, this note chords with
   that.

Chord \Chord\, n. [L chorda a gut, a string made of a gut, Gr.
   ?. In the sense of a string or small rope, in general, it is
   written cord. See {Cord}.]
   1. The string of a musical instrument. --Milton.

   2. (Mus.) A combination of tones simultaneously performed,
      producing more or less perfect harmony, as, the common
      chord.

   3. (Geom.) A right line uniting the extremities of the arc of
      a circle or curve.

   4. (Anat.) A cord. See {Cord}, n., 4.

   5. (Engin.) The upper or lower part of a truss, usually
      horizontal, resisting compression or tension. --Waddell.

   {Accidental, Common, & Vocal} {chords}. See under
      {Accidental}, {Common}, and {Vocal}.

   {Chord of an arch}. See Illust. of {Arch}.

   {Chord of curvature}, a chord drawn from any point of a
      curve, in the circle of curvature for that point.

   {Scale of chords}. See {Scale}.

Source : WordNet®

chord
     n 1: a straight line connecting two points on a curve
     2: a combination of three or more notes that blend harmoniously
        when sounded together

chord
     v 1: play chords on (a string instrument)
     2: bring into consonance, harmony, or accord while making music
        or singing [syn: {harmonize}, {harmonise}]