/ Dictionary / Index M McAdoo: Meaning and Definition of Find definitions for: Mc•A•doo Pronunciation: (mak'u-d"), [key] — n. 1863–1941, U.S. lawyer and statesman: Secretary of the Treasury 1913–18. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. MC McAlester Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language