/ Dictionary / Index T tooth powder: Meaning and Definition of Find definitions for: tooth' pow"der Pronunciation: [key] a dentifrice in the form of a powder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: toothpowder (Thesaurus) toothpick tooth rash Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language