/ Dictionary / Index L LW: Meaning and Definition of Find definitions for: LW Pronunciation: [key] low water. l/w Pronunciation: [key] lumen per watt; lumens per watt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Lvov L wave 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