ruble (n.)

unit of the Russian monetary system, 1550s, via French rouble, from Russian rubl', perhaps from Old Russian rubiti "to chop, cut, hew," so called because the original metallic currency of Russia (14c.) consisted of silver bars, from which the necessary amount was cut off; from Proto-Slavic *rub-, from PIE root *reub-, *reup- "to snatch" (see rip (v.)).