Meaning

noun an anthology of articles on a related subject or an anthology of the works of a single author

noun a vehicle carrying many passengers; used for public transport

adjective providing for many things at once

originEtymology tree Proto-Indo-European *h₃ep-der. Proto-Italic *opnis Latin omnis Latin omnibuslbor. French omnibusbor. English omnibus Borrowed from French (voiture) omnibus (“(carriage) for all”), from Latin omnibus (“for all”), dative plural of omnis (“all”).

Etymology from Wiktionary, CC BY-SA 3.0