"omnibus" in the noun sense
1. omnibus
an anthology of articles on a related subject or an anthology of the works of a single author
2. bus, autobus, coach, charabanc, double-decker, jitney, motorbus, motorcoach, omnibus, passenger vehicle
a vehicle carrying many passengers used for public transport
"he always rode the bus to work"
"omnibus" in the adjective sense
1. omnibus
providing for many things at once
"an omnibus law"
Source: WordNet® (An amazing lexical database of English)
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