/ Dictionary / Index V Valle d'Aosta: Meaning and Definition of Find definitions for: Val•le d'A•o•sta Pronunciation: (väl'le dä-ô'stä), [key] a region in NW Italy. 114,162; 1259 sq. mi. (3260 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. valleculate Valle de la Pascua Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language