▪ (of a horse) with serious damage to the legs, in particular the tendons, caused by excessive strain.Similardefectivebrokendamagedfaultyunsoundnot workingnot functioningmalfunctioningin disrepairinoperativeout of order/commissionnot in working ordernon-functioningdowninformal:kaputon the blinkon its last legsbustbustedconked outclapped outacting/playing upgone haywiregone phutfinisheddone fordudknackeredduffrumptyOppositeworkingfixed