bus: [19] Bus is, of course, short for omnibus. The first person on record as using it was the British writer Harriet Martineau, who spelled it buss: ‘if the station offers me a place in the buss’, Weal and woe in Garveloch 1832. Omnibus itself was borrowed from French, where it was first applied in 1828 to a voiture omnibus, literally ‘carriage for everyone’ (omnibus is the dative plural of Latin omnis ‘all’). [bus etymology, bus origin, 英语词源]