Definitions of clarence:

• noun:   a closed carriage with four wheels and seats for four passengers
• name:  A male given name (very common: 1 in 507 males; popularity rank in the U.S.: #93)
• name:  A female given name (rare: 1 in 100000 females; popularity rank in the U.S.: #3901)
• name:  A surname (very rare: popularity rank in the U.S.: #41104)