peekaboo
noun [ U ] uk/ˌpiːk.əˈbuː/ us/ˌpiːk.əˈbuː/ (UK also peep-bo, uk/ˌpiːpˈbəʊ/ us/-ˈboʊ/)
躲躲猫（把脸一隐一现逗幼儿玩的一种游戏）
a game played with very young children in which you hide your face, especially with your hands, and then suddenly take your hands away saying "peekaboo"