konks

verb
  1. to hit or strike someone or something on the head
  2. Usage: informal
  3. to break down or stop working suddenly (often used with 'out')
  4. Usage: informal
  5. to fall asleep or lose consciousness suddenly (often used with 'out')
  6. Usage: informal
noun
  1. a hit or blow on the head
  2. Usage: informal

Examples