10 letters · 15 points in Scrabble
noun a passenger bus with an electric motor that draws power from overhead wires
originEtymology tree English trolley Proto-Indo-European *h₃ep-der. Proto-Italic *opnis Latin omnis Latin omnibuslbor. French omnibusbor. English omnibusclip. English bus English trolleybus From trolley + bus.
Etymology from Wiktionary, CC BY-SA 3.0