Big Easy, the, n. — Green’s Dictionary of Slang

Big Easy, the n.

[? coined by James Conaway as the title of his novel The Big Easy (1970), later a popular film (1986); presumably f. the stereotype of its free-and-easy lifestyle]

(US) New Orleans, Louisiana.

1970		J. Conaway [bk title] Big Easy.
1990		S. Morgan Homeboy 371: The kid from the town they called the Big Easy.
2009		BigEasy.com 🌐 Locals’ Guide to Lovin’ New Orleans: BigEasy Magazine.
2018		(con. 1963) L. Berney November Road 3: Behold! The Big Easy in all its wicked splendor!