(informal) Somewhat okay; tolerable.

A prefecture of Japan. / The capital city of Okayama Prefecture, Japan. / A surname from Japanese.

(informal, chiefly Internet slang, initialism) Abbreviation of okey-dokey.

A river in central Russia, the largest right tributary of the Volga.

A small village, a suburb of Montreal, Quebec, Canada.

(Canada) A kind of pungent, semi-soft cheese, originally made by Trappist monks in Oka, Quebec.

An ancient town in Bithynia, in modern Turkey. / The capital city of Akoko South-West, Ondo, Nigeria. / An unincorporated community in Calhoun County, West Virginia, United States.

(law) Abbreviation of United States District Court for the Northern District of Oklahoma, as used in case citations.

(law) Abbreviation of United States District Court for the Western District of Oklahoma, as used in case citations.

(law) Abbreviation of United States District Court for the Eastern District of Oklahoma, as used in case citations.