/ Dictionary / Index L loop window: Meaning and Definition of Find definitions for: loop' win"dow Pronunciation: [key] a tall, narrow window. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. loop-the-loop loopy Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language