Pronunciation: (ka-stil'yun), [key]
1. the dialect of Spanish spoken in Castile.
2. the official standard form of the Spanish language as spoken in Spain, based on this dialect.
3. a native or inhabitant of Castile.
of or pertaining to Castile.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.