draw on
verb
Definitions
To sketch or mark with pencil, crayon, etc., on a given surface.
(also draw upon) To appeal to, make a demand of, rely on; to utilize or make use of, as a source.
Example: The reporter drew heavily on interviews with former members of the secretive group.
To advance, continue; to move or pass slowly or continuously, as under a pulling force.
Example: As the day draws on, the oxen will begin to show fatigue.
To approach, come nearer, as evening.
Example: Evening is drawing on; we'd better call it a day.