Breadcrumb Home > Thesaurus > C Synonyms of castilla Find synonyms for: Noun 1. Castile, Castilla usage: a region of central Spain; a former kingdom that comprised most of modern Spain and united with Aragon to form Spain in 1479 WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of castilla (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: demagogue Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language