Ca·jun also Ca·jan (k??j?n)n. A member of a group of people in southern Louisiana descended from French colonists exiled from Acadia in the 1700s.adj. Of or relating to the Cajuns or their culture.[Alteration of Acadian.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.Cajun (?ke?d??n) n1. (Peoples) a native of Louisiana descended from 18th-century Acadian immigrants2. (Languages) the dialect of French spoken by such people3. (Music, other) the music of this ethnic group, combining blues and European folk musicadj4. (Peoples) denoting, relating to, or characteristic of such people, their language, or their music5. (Languages) denoting, relating to, or characteristic of such people, their language, or their music6. (Music, other) denoting, relating to, or characteristic of such people, their language, or their music[C19: alteration of Acadian; compare Injun for Indian]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Ca?jun (?ke? d??n) n. 1. a member of the traditionally Roman Catholic, French-speaking population of rural S Louisiana, descended largely from French colonists expelled from Acadia in 1755?63. 2. the form of French spoken by the Cajuns. [1875?80; aph. variant of Acadian] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.