castellano
noun
cas·te·lla·no
ˌkastəˈl(y)ä(ˌ)nō
plural -s
1
: an ancient Spanish gold coin bearing the Castilian arms
especially : one weighing ¹/₅₀ of a mark
2
: an ancient Spanish unit of weight equivalent to ¹/₅₀ of a mark
Word History
Etymology
Spanish, literally, Castilian