What is the meaning of slap?

noun

• A blow from a flat object (as an open hand.
  • synonyms: smack
• The act of smacking something; a blow delivered with an open hand.
  • synonyms: smack, smacking

verb

• Hit with something flat, like a paddle or the open hand.
  • usage: "The impatient teacher slapped the student"; "a gunshot slapped him on the forehead"

adverb

• Directly.
  • usage: "he ran bang into the pole"; "ran slap into her"
  • synonyms: bang, slapdash, smack, bolt