Bilious \Bil"ious\ (b[i^]l"y[u^]s), a. [L. biliosus, fr. bilis bile.]

1. Of or pertaining to the bile.

2. Disordered in respect to the bile; troubled with an excess of bile; as, a bilious patient; dependent on, or characterized by, an excess of bile; as, bilious symptoms.

3. Choleric; passionate; ill tempered. ``A bilious old nabob.'' --Macaulay.

Bilious temperament. See Temperament.

Source: Webster's Revised Unabridged Dictionary (1913)