plural of fourgon

(rail transport) A French baggage wagon. / An ammunition wagon.

(geometry) A polygon with four sides; a quadrilateral.

(music) A musical interval of the Western twelve-semitone system consisting of four semitones and spanning four degrees of the diatonic scale. It is one semitone narrower than a perfect fourth and enharmonically equivalent to a major third.

(music) A type of tritone in musical composition comprising six semitones. It spans four diatonic scale degrees like a perfect fourth but with an extension of a semitone. The number of diatonic degrees it spans is what distinguishes it from a diminished fifth.

The property of being fourfold.

plural of fourth official

plural of fourth slip

(music) a note with 1/64 the value of a whole note

plural of sixty-fourth note