Definitions
1.nounA vehicle set up to carry many people (now usually called a bus).
2.nounAn anthology of previously released material linked together by theme or author, especially in book form.
3.nounA broadcast programme consisting of all of the episodes of a serial that have been shown in the previous week."The omnibus edition of The Archers is broadcast every Sunday morning at 11.00."
4.nounA stamp issue, usually commemorative, that appears simultaneously in several countries as a joint issue.
5.verbTo combine (legislative bills, etc.) into a single package.
6.verbTo drive an omnibus.
7.verbTo travel or be transported by omnibus.
8.adjectiveContaining multiple items."The legislature enacted an omnibus appropriations bill."