Definitions of Billie:

• name:  A female given name (common: 1 in 1449 females; popularity rank in the U.S.: #278)
• name:  A male given name (rare: 1 in 5882 males; popularity rank in the U.S.: #522)
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #15919)