1. to start, to get started, to start up (especially a vehicle) (transitive, causative)

2. to start up, to turn on (a computer) (transitive, causative)

3. to start, to get started, to start up (intransitive, especially of a vehicle)

4. to drive off, to pull away (intransitive, of a car or its driver)

5. to start up, to turn on, to begin to operate (intransitive, of a computer)

6. to untie (intransitive)