/ Dictionary / Index G Glenn: Meaning and Definition of Find definitions for: Glenn Pronunciation: (glen), [key] — n. born 1921, U.S. astronaut and politician: first U.S. orbital space flight 1962; U.S. senator since 1975. a male or female given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: glenn (Thesaurus) glengarry glenoid Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language