Definition of vuvuzela™ noun from the Oxford Advanced Learner's Dictionary

vuvuzela™

noun

ˌvuːvuːˈzeɪlə vuvuzela pronunciation American

ˌvuːvuːˈzeɪlə

(South African English)

a long plastic instrument in the shape of a trumpet, that makes a very loud noise when you blow it and is popular with football fans in South Africa