Billon
noun
Any of several alloys of precious metals and base metals that are used (where legal) to make coins, medals etc.
billon
辞書エントリ
辞書をさらにインポートLoading dictionaries...
Initializing dictionary manager
Any of several alloys of precious metals and base metals that are used (where legal) to make coins, medals etc.
Loading dictionaries...
Initializing dictionary manager