Definitions of Karl:

• name:  A male given name (common: 1 in 1449 males; popularity rank in the U.S.: #228)
• name:  A female given name (rare: 1 in 50000 females; popularity rank in the U.S.: #2870)
• name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #5123)