To initiate a new venture, or to advance beyond previous achievements.
To begin digging in the earth at the start of a new construction, or, originally, for cultivation.
To separate from the ground on takeoff; to become airborne.
To lift off the sea bottom when being weighed.
To bring (something) into practice.
To cause (someone) to be acquainted (with someone else).
To add (something) to a system, a mixture, or a container.
To make (something or someone) known by formal announcement or recommendation.