/ Dictionary / Index W Wallachia: Meaning and Definition of Find definitions for: Wal•la•chi•a Pronunciation: (wo-lā'kē-u), [key] — n. a former principality in SE Europe: united with Moldavia (Moldova) to form Rumania in 1861. 29,569 sq. mi. (76,585 sq. km). Cap.: Bucharest. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Wallach wallah Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language