/ Dictionary / Index L lower chamber: Meaning and Definition of Find definitions for: low'er cham'ber Pronunciation: (lō'ur). [key] See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lower case Lower Chinook Related Content Daily Word Quiz: benevolent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language