ARGENTUM ALBUM, in our old customs, silver coin, or pieces of bullion that anciently passed for money. By Domsday tenure, some rents to the king were paid in argento albo, common silver pieces of money; other rents in libris ursis et pensatis, in metal of full weight and purity: in the next age, that rent which was paid in money, was called blanch farm, and
Argentum
Argonaute.
and afterwards white rent; and what was paid in provisions, was termed black mail.