n. The fleshy part of the body, in men and quadrupeds, above the thigh, pertaining to each hipjoint and wing of the pelvis; the hip: as, a haunch of venison; the haunches of a horse.n. The coxa or basal joint of the legs in insects and spiders.n. The rear; the hind part.n. The jamb or upright post of a door. See jamb.n. In architecture, the middle part between the vertex or crown and the springing of an arch — sometimes used to include the spandrel or part of it; the flank. Also haunching.To throw, as a stone, from the hand by jerking it against the haunch.