/ Dictionary / Index U Upper Klamath Lake: Meaning and Definition of Find definitions for: Up'per Klam'ath Lake'. Pronunciation: [key] See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. upper house Upper Michigan Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language