Real Dictionary

Cajun
Cajun means belonging or relating to a group of people who live mainly in Louisiana in the United States, and are descended from French people. Cajun is also used to refer to the language and culture of these people.

Cajun in American English
a native of Louisiana originally descended from Acadian French immigrants
of the Cajuns or their dialect or culture
adjective: of, pertaining to, or characteristic of Cajuns, esp. those of Louisiana
noun: a member of a group of people with an enduring cultural tradition whose French Catholic ancestors established permanent communities in Louisiana and Maine after being expelled from Acadia in the late 18th century

Cajun in British English
adjective: denoting, relating to, or characteristic of such people, their language, or their music
noun: a native of Louisiana descended from 18th-century Acadian immigrants