billon
bil·lon
noun \ˈbi-lən\Definition of BILLON
1
: gold or silver heavily alloyed with a less valuable metal
2
: an alloy of silver containing more than 50 percent of copper by weight
Origin of BILLON
French, from Middle French, from bille log — more at billet
First Known Use: circa 1727
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Previous Word in the Dictionary: bill of sufferance
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