the string of a musical instrument.-a combination of tones simultaneously performed, producing more or less perfect harmony, as, the common chord.-a right line uniting the extremities of the arc of a circle or curve.-a cord. see cord, n., 4.-the upper or lower part of a truss, usually horizontal, resisting compression or tension.-to provide with musical chords or strings; to string; to tune.-to accord; to harmonize together; as, this note chords with that.