Definition of: slap

(slap) noun
A blow delivered with the open hand or with something flat; also, an insult; slur.
—v. slapped, slap·ping v.t.
1. To hit or strike with the open hand or with something flat; also, to rebuff; insult.
2. To put or place violently or carelessly.
—v.i.
3. To strike or beat as if with slaps: The waves slapped against the dock.
—adverb
1. Suddenly and forcibly; abruptly.
2. Colloq. Directly; straight: slap into his face. [<LG slapp]
—slap′per noun