Longman Dictionary of Contemporary English - carnival

~ n 1 a celebration with dancing, drinking, and a procession (1) through the streets  (Carnival in Rio | the Notting Hill carnival | the carnival atmosphere after they won the game) 2 AmE a noisy outdoor event at which you can ride on special machines and play games for prizes; funfair BrE 3 AmE an event held at a school in which students play games for prizes