What Does It Mean?

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From our dictionary:
bil•ious

(bil'yus),
adj.,
1. Physiol., Pathol. pertaining to bile or to an excess secretion of bile.
2. Pathol. suffering from, caused by, or attended by trouble with the bile or liver.
3. peevish; irritable; cranky.
4. extremely unpleasant or distasteful: a long scarf of bright, bilious green.