Nellie \n(el)-lie\ as a girl's name is a variant of Cornelia (Latin), Eleanor (Greek), Helen (Greek) and Nelly (English), and the meaning of Nellie is "horn; sun ray, shining light".
The baby name Nellie sounds like Nelli, Nelle and Neelie. Other similar baby names are Cellie, Kellie, Mellie, Nelsie and Nellsie.