1. to hit (something) lightly with the palm of the hand or some other flat surface
2. to slap (a person or animal) gently, especially on the back, as an expression of affection, congratulation, etc.
3. (trans.) to shape, smooth, etc., with a flat instrument or the palm
4. (intr.) to walk or run with light footsteps
5. a light blow with something flat
6. a gentle slap
7. a small mass of something
8. the sound made by a light stroke or light footsteps