encyclopedia

TROLLEY

1. An apparatus, such as a grooved wheel or shoe, at the end of a pole, used for collecting electric current from an overhead wire and transmitting it to a motor of a streetcar, trolleybus, or similar vehicle, when it…

TROLLEYBUS (ELECTRIC TROLLEYBUS-ETB, TROLLEY COACH)

An electrically propelled bus that obtains power via two trolley poles from a dual (positive and negative) overhead wire system along routes. It may be able to travel a limited distance on battery power or an auxiliary internal combustion engine.…

TROMPE L’OEIL

A French phrase meaning ‘trick of the eye.’ In art, when a two-dimensional surface is painted to look 3-dimensional, and thus ‘tricks’ your eye.