ETYM Old Eng. lappe, as. laeppa; akin to Dutch lap patch, piece, German lappen, Old High Germ. lappa, Dan. lap, Swed. lapp.
1. A part that lies over another part; SYN. overlap.
2. An area of control or responsibility.
3. Movement once around a course; SYN. circle, circuit.
4. The top of the thighs when one is seated; SYN. lap covering.

Link Access Protocol.

1. To lie partly over or alongside of something or of one another SYN. to overlap.
2. To move with or make or cause to move with or make a whistling or hissing sound, as of liquids; SYN. swish, swosh.
3. To take up with the tongue; SYN. lap up.
4. To advance one full circuit ahead of another competitor in a race