Little Bo Peep /ˌlɪtl bəʊ ˈpiːp/ BrE AmE ( also Bo Peep )
a character in a ↑ nursery rhyme (=an old song or poem for young children) . She is a young girl who loses the sheep that she is supposed to be taking care of Little Bo Peep has lost her sheep/And doesn't know where to find them;/Leave them alone, and they'll come home,/Bringing their tails behind them.