/ Dictionary / Index D dross: Meaning and Definition of Find definitions for: dross Pronunciation: (drôs, dros), [key] — n. waste matter; refuse. a waste product taken off molten metal during smelting, essentially metallic in character. coal of little value. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dross (Thesaurus) drosophila drossy Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language