/ Dictionary / Index H Halloween: Meaning and Definition of Find definitions for: Hal•low•een Pronunciation: (hal"u-wēn', -ō-ēn', hol"-), [key] — n. the evening of October 31; the eve of All Saints' Day; Allhallows Eve: observed esp. by children in costumes who solicit treats, often by threatening minor pranks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: halloween (Thesaurus) hallowed Hallowmas Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language