/ Dictionary / Index H Halley: Meaning and Definition of Find definitions for: Hal•ley Pronunciation: (hal'ē), [key] — n. 1656–1742, English astronomer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: halley (Thesaurus) Haller Halley's comet Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language