/ Dictionary / Index G graben: Meaning and Definition of Find definitions for: gra•ben Pronunciation: (grä'bun), [key] — n. a portion of the earth's crust, bounded on at least two sides by faults, that has dropped downward in relation to adjacent portions. Also calledCf. horst. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grabby grab rope Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language