/ Dictionary / Index A Appian Way: Meaning and Definition of Find definitions for: Ap'pi•an Way' Pronunciation: (ap'ē-un), [key] an ancient Roman highway extending from Rome to Brundisium (now Brindisi): begun 312 b.c. by Appius Claudius Caecus. ab. 350 mi. (565 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Appia appl. Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language