An oleaster, Elaeagnus angustifolia.

plural of rush hour

(video games) A situation (sometimes an extra stage) in which the player faces all of the bosses of the game, one after another.

(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.

Alternative form of rustbucket

(computing) A dialect of the programming language PL/I.

plural of rusty-spotted cat

Prionailurus rubiginosus, one of the smallest members of the cat family, native to India and Sri Lanka.

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.