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}]