Definition of highside in US English:

highside

noun

Motorcycling
  • A type of accident in which the rear tyre of a motorcycle loses and suddenly regains traction on a road surface when cornering, resulting in the rider being thrown into the air and over the motorcycle. Frequently attributive, as "highside accident", "highside crash", etc.

verb

Motorcycling
  • no object Of a motorcycle or its rider: to have a highside accident. Also with object (in pass.).

Origin

1970s. From high + side<br>1970s; earliest use found in AMA News. From highside.

Pronunciation

highside

/ˈhʌɪsʌɪd/