slap (noun)
1: a blow from a flat object (as an open hand) [syn: smack]
2: the act of smacking something; a blow delivered with an open hand [syn: smack, smacking] adv : directly; "he ran bang into the pole"; "ran slap into her" [syn: bang, slapdash, smack, bolt] v : hit with something flat, like a paddle or the open hand; "The impatient teacher slapped the student"; "a gunshot slapped him on the forehead"