ormolu (n.) Look up ormolu at Dictionary.com
"alloy of copper, zinc, and tin, resembling gold," 1765, from French or moulu, literally "ground gold," from or "gold" (from Latin aurum, from PIE *aus- (2) "gold;" see aureate) + moulu "ground up," past participle of moudre "to grind," from Latin molere "to grind" (from PIE root *mele- "to crush, grind").