Definition of motor bicyclist in US English:

motor bicyclist

noun

rare
  • Motorcyclist.

Origin

Early 20th century; earliest use found in Rupert Brooke (1887–1915), poet. From motor bicycle + -ist, after bicyclist.

Pronunciation

motor bicyclist

/ˈməʊtə ˌbʌɪsɪklɪst/