Definition of napper in English:

napper

noun

British
informal
  • A person's head.

    ‘a couple of shaven nappers’
    • ‘Because having seen the photos of his napper, surely, there is no way he will be going anywhere without a cap pulled on to hide what he must realise now is a truly hideous do.’
    • ‘Except he is not a man to allow his napper to reside in clouds, despite the club's fortunes taking off during his three-year stewardship.’
    • ‘Thinking laterally, on my feet, using my napper, I, armed with scant information and a hazy memory, embark on tracking FYCB down on the dating site myself.’
    • ‘When the Slovakian defender had cause to whack his napper at another careering ball, there was no doubt as to where it would end up.’
    skull, cranium, crown
    View synonyms

Origin

Late 18th century: from thieves' slang, of unknown origin.

Pronunciation

napper

/ˈnapə/