/ Dictionary / Index D Danu: Meaning and Definition of Find definitions for: Da•nu Pronunciation: (dä'n), [key] — n. Irish Myth. the mother of the Tuatha De Danann: identified with the Welsh Don. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: danu (Thesaurus) dantrolene Danube Related Content Daily Word Quiz: inane Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language