/ Dictionary / Index D dormer: Meaning and Definition of Find definitions for: dor•mer Pronunciation: (dôr'mur), [key] — n. Also calleda vertical window in a projection built out from a sloping roof. the entire projecting structure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dormer (Thesaurus) dormant dormeuse Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language