Oka

O·ka  (-kä)

1. A river, about 1,488 km (925 mi) long, of western Russia flowing north, east, and northeast to join the Volga River near Nizhny Novgorod.

2. A river rising in the Sayan Mountains of south-central Russia and flowing about 965 km (600 mi) generally north to the Angara River.

Thesaurus

Noun	1.	oka - a Turkish unit of weight equal to about 2.75 pounds weight unit, weight - a unit used to measure weight; "he placed two weights in the scale pan"
	2.	oka - a Turkish liquid unit equal to 1.3 pints liquid measure, liquid unit - a unit of capacity for liquids (for measuring the volumes of liquids or their containers)
	3.	oka - South American wood sorrel cultivated for its edible tubers oca, Oxalis crenata, Oxalis tuberosa oxalis, sorrel, wood sorrel - any plant or flower of the genus Oxalis