noun
plural -leys
[count] a US :an electric vehicle that runs along the street on tracks - called also streetcar, (US) trolley car, (chiefly Brit) tram
a vehicle that is pulled along tracks on the ground by a moving cable or that hangs from a moving cable - called also (US) trolley car
chiefly Brit
a metal basket on wheels used to hold groceries while you are shopping
a table with wheels used especially for serving food
off your trolley
Brit informal :crazy