/ Dictionary / Index G Gjallar-horn: Meaning and Definition of Find definitions for: Gjal•lar-horn Pronunciation: (yäl'lär-hôrn"), [key] — n. Scand. Myth. Heimdall's horn, used to warn the gods of Ragnarok. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. GJ Gjellerup Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language