Wikipedia
In public transit, a limited-stop bus, tram, or train service is a service that stops less frequently than local service. The term is normally used on routes with a mixture of fast and slow services, and can differ in meaning, depending on how it is used by different transit agencies. Additionally, there may be a "semi-fast" service, with more stops than a "fast" service, but fewer than a "slow" service.
In a typical metropolitan area, limited-stop services are most likely to be scheduled at times when more people are travelling (these times are not limited to the rush hours).
Sometimes a higher (premium) fare may be required for the faster journey, especially for some international trains in western Europe.