I. castilian noun
( -s )
Etymology: modification of Latin castellanus — more at castellan
obsolete : one of the garrison of a castle
II. cas·til·ian kaˈstilyən also kə- noun
( -s )
Usage: capitalized
Etymology: modification of Spanish castellano, from castellano, adjective, Castilian, from Latin castellanus of a castle, from castellum castle — more at castle
1. : a native or inhabitant of the central Spanish provinces of Old and New Castile or of the former kingdom of Castile ; broadly : spaniard
2.
a. : the dialect of Castile
b. : the official and literary language of Spain based on this dialect : standard Spanish
III. castilian (ˈ)ka|stilyən also kəˈs- adjective
Usage: usually capitalized
Etymology: modification of Spanish castellano
1. : of, relating to, or characteristic of the Spanish province of Castile or its inhabitants : native to Castile ; broadly : spanish
2. : of, relating to, or characteristic of the standard Spanish language