(obsolete) The Russian language, especially when (possibly erroneously) considered to be mutually intelligible with the Ukrainian (Little Russian) and Belarusian (White Russian) languages.

An oleaster, Elaeagnus angustifolia.

(cryptography) A method of rearranging plaintext before encryption by breaking it into two parts and inverting their order, so as to conceal obvious headers, salutations, signatures, etc.

plural of Russian bar

(circus arts) A gymnastics-style beam held by two porters used to do gymnastics-style tricks. / Used other than figuratively or idiomatically: see Russian, bar.

plural of Little Russian

Any of several species of genus Salsola and its close relatives, prickly shrublike annuals, especially Salsola tragus (syn. Kali tragus, which is the best-known kind of tumbleweed in the US.

plural of Russian oven

A kind of oven/furnace that first appeared in the 15th century, used for both cooking and domestic heating in traditional Russian, Ukrainian and Belarusian households, and designed to retain heat for long periods of time by channeling the smoke and hot air of combustion through a labyrinth of passages.

plural of Russian olive