Definitions of Jeffrey:

• name:  A male given name (very common: 1 in 169 males; popularity rank in the U.S.: #30)
• name:  A surname (rare: 1 in 25000 families; popularity rank in the U.S.: #3006)
• name:  A female given name (rare: 1 in 100000 females; popularity rank in the U.S.: #3643)