1. (noun) a company that performs a public service; subject to government regulation

• public utility company
• public-service corporation
• utility

1. (noun) a company that performs a public service; subject to government regulation

• bus company
• bus service
• electric company
• light company
• power company
• power service
• gas company
• gas service
• phone company
• phone service
• telco
• telephone company
• telephone service
• water company
• waterworks

1. (noun) a company that performs a public service; subject to government regulation

• service