Lewis & Short

discrīmĭnālis, e, adj. [discrimino], that serves to divide or part (late Lat.): acus, a pin or bodkin that parts the hair, a hair-pin, Hier. Ruf. 3, 42.
Also, subst.: discrīmĭnāle, is, n., a head-dress, Vulg. lsa. 3, 20.