Definition of Oerlikon in US English:

Oerlikon

noun

  • Any of various guns and fittings manufactured by Werkzeugmaschinenfabrik Oerlikon Buhrle & Co., specifically a light anti-aircraft cannon.

Origin

1940s; earliest use found in R.A.F. Journal. From Oerlikon, in the name of the Werkzeugmaschinenfabrik Oerlikon Buhrle.