[Fr. harnois.] The trappings of a draught-horse, whether for a wagon, coach, gig, etc. It may be said to consist of four parts: (1) the driving part, or bridle and reins ; (2) the drawing part, consisting of the collar, hames, and traces; (3) the supporting part, for holding up the shafts, made up of the saddle and its parts; and (4) the holding-back part, or breeching.