资料来源 : pyDict

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Bo \Bo\, interj. [Cf. W. bw, an interj. of threatening or
   frightening; n., terror, fear, dread.]
   An exclamation used to startle or frighten. [Spelt also {boh}
   and {boo}.]