noun
also rou·ble ˈrübəl
( -s )
Etymology: Russian rubl', from Old Russian rublĭ, literally, block of wood, from rubiti to build; akin to Lithuanian rum̃bas scar on a tree and perhaps to Middle High German rumph trunk, torso — more at rump
1. : the basic monetary unit of the Union of Soviet Socialist Republics — see money table
2. : a coin representing one ruble