From The Collaborative International Dictionary of English v.0.48 :
Biliousness \Bil"ious*ness\, n.
The state of being bilious.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
biliousness
n 1: gastric distress caused by a disorder of the liver or gall
bladder
2: a disposition to exhibit uncontrolled anger; "his temper was
well known to all his employees" [syn: temper,
biliousness, irritability, peevishness, pettishness,
snappishness, surliness]