RhymeZone: milly definitions

Definitions of Milly:

name: A female given name (common: 1 in 100000 females; popularity rank in the U.S.: #3786)
name: A surname (very rare: popularity rank in the U.S.: #55433)

noun: A diminutive of the female given names Mildred, Millicent, Emily and Camilla, also used as a formal given name.

(Definitions from Wiktionary)