[1] : The Collaborative International Dictionary of English v.0.48

chord \chord\ k^ord, n. l chorda a gut, a string made of a
   gut, gr. chordh`. 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.
      1913 webster

   2. mus. a combination of tones simultaneously performed,
      producing more or less perfect harmony, as, the common
      chord.
      1913 webster

   3. geom. a right line uniting the extremities of the arc of
      a circle or curve.
      1913 webster

   4. anat. a cord. see cord, n., 4.
      1913 webster

   5. engin. the upper or lower part of a truss, usually
      horizontal, resisting compression or tension. --waddell.
      1913 webster

   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.
      1913 webster
see also:
cord accidental, common,  vocal chords accidental common vocal 
chord of an arch arch chord of curvature scale of chords scale 

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