1. [ adjective ] providing for many things at once

"an omnibus law"

Related terms: comprehensive
2. [ noun ] (writing) an anthology of articles on a related subject or an anthology of the works of a single author
Related terms: anthology
3. [ noun ] (transportation) a vehicle carrying many passengers; used for public transport
Synonyms: bus charabanc motorcoach double-decker jitney motorbus coach autobus

"he always rode the bus to work"

Related terms: public_transport trolleybus school_bus express fleet window roof passenger bus