Definition of BMX in English:

BMX

noun

  • 1Organized bicycle racing on a dirt track, especially for youngsters.

    [as modifier] ‘a BMX track’
    1. 1.1A kind of bicycle designed to be used for organized racing on a dirt track.

Origin

1970s: from the initial letters of bicycle motocross, with X standing for cross.

Pronunciation:

BMX

/ˌbēˌemˈeks/