Definitions
1.nounA derisive shout made to indicate disapproval.
2.verbTo shout extended boos derisively."When he took the podium, the crowd booed."
3.verbTo shout extended boos at, as a form of derision."The protesters loudly booed the visiting senator."
4.interjectionA loud exclamation intended to scare someone, especially a child. Usually used when one has been hidden from the victim and then suddenly appeared unexpectedly.
5.interjectionUsed ironically in a situation where one had the opportunity to scare someone by speaking suddenly.
6.interjectionAn exclamation used by a member or many members of an audience, as at a stage play or sports game, to indicate derision or disapproval of what has just occurred.