/ Dictionary / Index P Purbach: Meaning and Definition of Find definitions for: Pur•bach Pronunciation: (poor'bäk), [key] — n. a walled plain in the third quadrant of the face of the moon: about 75 mi. (120 km) in diameter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Purana purblind Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language