In solitaire card games, to place a card over another card of lower value. (e.g., place 5♦ over 4♣)
To accumulate, to pile up, to increase in stages.
To close up by building.
To strengthen.
To erect; to construct.
To withdraw more money from an account than there is credit; to make an overdraft
To use a device for shooting arrows shorter than the draw of the bow.
To draw over the top of existing content.
The process by which, during the rendering of a three-dimensional scene, a pixel is replaced by one that is closer to the viewpoint, as determined by their Z coordinates.