What is "vuvuzela"

n. A trumpet-shaped horn, now usually plastic, that produces a loud buzzing sound.

The vuvuzela , also known as lepatata Mambu (its Tswana name) and stadium horn (its American name), is a plastic horn, about long, which produces a loud monotone note, typically around B 3 (the B below middle C). Some models are made in two parts to facilitate storage, and this design also allows pitch variation. Many types of vuvuzela, made by several manufacturers, may produce various intensity and frequency outputs. The intensity of these outputs depends on the blowing technique and pressure exerted.

Traditionally made and inspired from a kudu horn, the vuvuzela was used to summon distant villagers to attend community gatherings. The vuvuzela is most used at football matches in South Africa, and it has become a symbol of South African football as the stadiums are filled with its sound. The intensity of the sound caught the attention of the global football community during the 2009 FIFA Confederations Cup in anticipation of South Africa hosting the 2010 FIFA World Cup.

The vuvuzela has been the subject of controversy when used by spectators at football matches. Its high sound pressure levels at close range can lead to permanent hearing loss for unprotected ears after exposure, with a sound level of 120 dB(A) (the threshold of pain) at from the device opening.