Chord

(kōrd), n. [Lat. chorda, Gr. χορδή, an intestine of which strings are made, Fr. corde, Pr. corda. When it signifies 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, and in harmony.
3. (Geom.) A right line, uniting the extremities of the arc of a circle.