Definition of slap adverb from the Oxford Advanced Learner's Dictionary

     

    slap

     adverb
    adverb
    BrE BrE//slæp//
     
    ; NAmE NAmE//slæp//
     
    (also slap bang)(informal)
     
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  1. 1straight, and with great force Storming out of her room, she went slap into Luke.
  2. 2exactly Their apartment is slap bang in the middle of town.
  3. Word Origin late Middle English (as a verb): probably imitative. The noun dates from the mid 17th cent.
See the Oxford Advanced American Dictionary entry: slap