Noun | 1. | ![]() cuneiform bone, os triquetrum, pyramidal bone, triquetral, triquetral bone - a wrist bone that articulates with the pisiform and hamate and lunate bones os pisiforme, pisiform, pisiform bone - a small wrist bone that articulates only with the triquetral os trapezium, trapezium bone, trapezium - the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals os trapezoideum, trapezoid bone, trapezoid - the wrist bone between the trapezium and the capitate bones capitate, capitate bone, os capitatum - the wrist bone with a rounded head shape that articulates with the 3rd metacarpus hamate, hamate bone, os hamatum, unciform bone - the wrist bone in line with the 4th and 5th fingers articulatio radiocarpea, carpus, radiocarpal joint, wrist, wrist joint - a joint between the distal end of the radius and the proximal row of carpal bones |