Breadcrumb Home > Dictionary > Index W William: Meaning and Definition of Find definitions for: Wil•liam Pronunciation: (wil'yum), [key] — n. a word formerly used in communications to represent the letter W. a male given name: from Germanic words meaning “will” and “helmet.” Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. willful William I TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: radula Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language