Definitions of Glenn:

• noun:   made the first orbital rocket-powered flight by a United States astronaut in 1962; later in United States Senate (1921-)
• name:  A male given name (common: 1 in 598 males; popularity rank in the U.S.: #117)
• name:  A surname (common: 1 in 5000 families; popularity rank in the U.S.: #573)
• name:  A female given name (rare: 1 in 100000 females; popularity rank in the U.S.: #3723)