To act with reserve; to contain one's full measure or power.
To delay the progress of, especially in school.
To contain; stop.
To commit oneself (to an obligation, activity etc.).
To pass a slower moving vehicle on the curbside rather than on the side closest to oncoming traffic.
To take upon oneself; to start, to embark on (a specific task etc.).
The passing of slower traffic on the curbside rather than on the side closest to oncoming traffic.