譏笑
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}.]
boo v : show displeasure, as after a performance or speech [syn: {hiss}] [ant: {applaud}] boo n : a cry or noise made to express displeasure or contempt [syn: {hoot}, {Bronx cheer}, {hiss}, {raspberry}, {razzing}, {snort}, {bird}]