SEIGNIORAGE

SEIGNIORAGE seigniorage (seen-y[schwa]r-ij), n. [Law French] 1. Hist. The tenure existing between lord and vassal. 2. Hist. A prerogative of the Crown; specif., the charge for coining bullion into money; mintage. 3. A royalty. 4. A profit. How to translate the legal term SEIGNIORAGE in Chinese?