blind man’s buff
noun /ˌblaɪnd mænz ˈbʌf/
  /ˌblaɪnd mænz ˈbʌf/
 (North American English also blind man’s bluff)
 [uncountable]- a children’s game in which a player whose eyes are covered with a piece of cloth tries to catch and identify the other players捉迷藏(游戏) 词源early 17th cent.: from buff ‘a blow’, from Old French bufe ‘a blow’.