"slap" in the noun sense
1. slap, smack
a blow from a flat object (as an open hand)
2. smack, smacking, slap
the act of smacking something a blow delivered with an open hand
"slap" in the verb sense
hit with something flat, like a paddle or the open hand
"The impatient teacher slapped the student"
"a gunshot slapped him on the forehead"
"slap" in the adverb sense
1. bang, slap, slapdash, smack, bolt
"he ran bang into the pole"
"ran slap into her"
Source: WordNet® (An amazing lexical database of English)
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