peekaboo

• peek-a-boo

From peek +‎ -a- +‎ boo.

peekaboo (uncountable)

1. (games) A game for a small child in which one covers one's face, then suddenly reveals it, saying "Boo!" or "Peekaboo!".

peekaboo (not comparable)

1. (of clothing) with holes, slits or transparent fabric to reveal what is normally hidden.

   The model was wearing a peekaboo swimsuit.

peekaboo (third-person singular simple present peekaboos, present participle peekabooing, simple past and past participle peekabooed)

1. (intransitive) To peep out.
   • 2013, Stan Timmons, Ammon's Horn

     A spike of white bone peekabooed through the flesh of his wrist and blood spurted.

   • 2013, Marianne Harden, Malicious Mischief

     “Mount Rainier has escaped the clouds.” I turned to the volcano peekabooing through the trees in the distance.

peekaboo

1. boo (when showing oneself unexpectedly)