/ Dictionary / Index C Cumberland Mountains: Meaning and Definition of Find definitions for: Cum'berland Moun'tains Pronunciation: [key] a plateau largely in Kentucky and Tennessee, a part of the Appalachian Mountains: highest point, ab. 4000 ft. (1220 m). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Cumberland Gap cumbersome Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language