[mass noun]a game played with a young child, which involves hiding behind something and suddenly reappearing, saying ‘peekaboo’ 躲躲猫(一种一隐一现以逗小孩的游戏)
adjective
[attrib.](of a garment) revealing glimpses of the skin or body (衣服)露透装的 a black lace peekaboo dress. 黑色花边露透装。 ■(of a hairstyle) concealing one eye with a fringe or wave (发型)(用刘海或波浪形头发)遮盖一只眼睛的
语源
late 16th cent.(as a noun): from the verbpeek + boo