To begin or commence an action, process, or event. She decided to start a new project at work.
To cause something to begin or initiate. He started the car with a turn of the key.
To set out on a journey or course. They started their trip early in the morning.
To cause a machine or device to begin operating. Press the button to start the washing machine.
To originate or arise from a particular point or situation. The tradition started in the 18th century.
To jerk or move suddenly in surprise or alarm. He started when the door slammed behind him.