/ Dictionary / Index T tubercle: Meaning and Definition of Find definitions for: tu•ber•cle Pronunciation: (t'bur-kul, ty'-), [key] — n. a small rounded projection or excrescence, as on a bone or on the surface of the body. a small, firm, rounded nodule or swelling. such a swelling as the characteristic lesion of tuberculosis. a tuberlike swelling or nodule. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tubercle (Thesaurus) tube railway tubercle bacillus Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language