- a region in N Spain: formerly a province.
Spanish Castilla la Vieja.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a region of N Spain, on the Bay of Biscay: formerly a provinceSpanish name: Castilla la Vieja
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012