/ Dictionary / Index C common tannin: Meaning and Definition of Find definitions for: com'mon tan'nin Pronunciation: [key] — Chem. Chem. See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. common sulfur common teal Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language