Of or pertaining to, or partaking of the nature of, bile.In pathology, noting, subject to, or characterized by a disordered condition of the system, once supposed to depend on a derangement of the secretion of bile, marked by anorexia, furred tongue, a bad taste in the mouth, dull headache, drowsiness, disturbed sleep, with general malaise and depression.Suffering from biliousness.Figuratively, choleric; testy; cross.