lap

The act or process of lapping.

That part of any substance or fixture which extends over, or lies upon, or by the side of, a part of another.

The state or condition of being in part extended over or by the side of something else; or the extent of the overlapping.

The amount by which a slide valve at its half stroke overlaps a port in the seat, being equal to the distance the valve must move from its mid stroke position in order to begin to open the port. Used alone, lap refers to outside lap (see below).

(sports) One circuit around a race track.

(swimming) The traversal of one length of the pool, or (less commonly) one length and back again.

In card playing and other games, the points won in excess of the number necessary to complete a game;—so called when they are counted in the score of the following game.

A sheet, layer, or bat, of cotton fiber prepared for the carding machine.

A piece of brass, lead, or other soft metal, used to hold a cutting or polishing powder in cutting glass, gems, etc. or in polishing cutlery, etc. It is usually in the form of a wheel or disk that revolves on a vertical axis.