English edit

Etymology edit

Borrowed from German RKO.

Proper noun edit

RKO

  1. (historical) Initialism of Reichskommissariat Ostland.

German edit

Proper noun edit

RKO n (proper noun, strong, genitive RKOs or RKO)

  1. (historical) Initialism of Reichskommissariat Ostland.

Declension edit