The story
- nai-mus-pro · derived from*¢akliCo“trout”
- Choctaw · derived fromsakli“trout”
- Louisiana French · borrowed fromsac-à-lait
- English todaysac-a-lait
From Louisiana French sac-à-lait (literally “bag of milk”), a folk etymology reinterpretation of Choctaw sakli (“trout”), ultimately from Proto-Muskogean *¢akliCo (“trout”).
Etymology from Wiktionary, CC BY-SA 4.0.