/ Dictionary / Index T tum: Meaning and Definition of Find definitions for: tum Pronunciation: (tum), [key] — tummed, tum•ming. to tease (wool) in the preliminary carding operation, or to open out the fibers prior to carding. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tum (Thesaurus) tulwar Tumaco Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language