peep-bo
noun /ˈpiːp bəʊ/,  /ˈpiːpəʊ/
  /ˈpiːp bəʊ/,  /ˈpiːpəʊ/
 (British English) (also peekaboo British and North American English)
 [uncountable]- a simple game played to entertain young children, in which you keep hiding your face and then showing it again, saying ‘Peekaboo!’ or ‘Peep-bo!’Topics Games and toysc2