slapper

noun

1. (countable)One who, or that which, slaps.
2. (Commonwealth, Ireland, UK, countable, slang)A prostitute.

   “A fella looking dapper / And he's sittin' with a slapper / Then I see it's a pimp / And his crack whore”

   “You've got a photo of the dead grandad, no pic of the blonde slapper?”

3. (Commonwealth, Ireland, UK, countable, slang)A woman of loose morals.
4. (countable)A type of detonator which uses a powerful surge of electricity to vaporize a thin metal foil, propelling a larger piece of plastic film at a speed high enough to detonate an explosive upon impact.
5. (archaic, countable, slang)Anything monstrous; a whopper.