The Collaborative International Dictionary of English v.0.48:

Biliousness \Bil"ious*ness\, n.
   The state of being bilious.
   [1913 Webster]

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]