1. wheeled carts used for transporting goods or luggage
Usage: British English
2. electric streetcars or trams that run on tracks
Usage: American English
3. wheeled serving carts used in restaurants or for food service

Examples

• The airport provides free trolleys for passengers to transport their luggage.
• Shopping trolleys are available at the entrance of the supermarket.
• The old trolleys that once ran through downtown have been replaced by buses.
• San Francisco’s cable cars and trolleys are popular tourist attractions.
• The flight attendants pushed drink trolleys down the airplane aisle.
• Hospital staff use medical trolleys to transport equipment between rooms.
• The dessert trolleys at the restaurant displayed an impressive selection of cakes.