Peekaboo

Main Entry: (1) peekaboo
Function: noun
Date: 1599

: a game for amusing a baby by repeatedly hiding one's face or body and popping back into view exclaiming Peekaboo!

Main Entry: (2) peekaboo
Function: adjective
Date: 1895

1 : trimmed with eyelet embroidery a peekaboo blouse
2 : made of a sheer or transparent fabric; also: revealing usually small areas of skin
3 : offering only limited display or disclosure especially of a teasing sort peekaboo publicity