spank

Short definition from Wiktionary

Verb

1. 1
   To beat, smack or slap a person's buttocks, with the bare hand or other object, as punishment, or for sexual gratification.
2. 2
   To soundly defeat, to trounce.
3. 3
   To hit very hard.
4. 4
   To move quickly and nimbly on foot; to stride or run at a brisk pace.
5. 5
   To move or turn rapidly, as the gears of a machine or the sails of a ship.
6. 6
   To shoot out or throw violently; to hurl or knock out.

Noun

1. 1
   An instance of spanking, separately or part of a multiple blows-beating; a smack, swat, or slap.
2. 2
   A slapping sound, as produced by spanking.
3. 3
   An instance of masturbation.
4. 4
   A leap or bound.