Throttle
Throttling involves limiting how much something can be used or performed in a set amount of time. For example, a web server may throttle its users by only allowing 10 users at a time if it is overloaded. This type of throttle improves performance and can prevent the system from crashing during busy times by not trying to serve more people than it is capable of handling. However, this type of throttle also increases frustration with any users who are unable to access the service.
Also see: Cell phone definitions, Network definitions, QoS