| Noun | 1. | tubercle - a swelling that is the characteristic lesion of tuberculosislesion - any localized abnormal structural change in a bodily part |
| 2. | tubercle - small rounded wartlike protuberance on a plantplant process, enation - a natural projection or outgrowth from a plant body or organ | |
| 3. | tubercle - a protuberance on a bone especially for attachment of a muscle or ligamentdeltoid eminence, deltoid tuberosity - a bump on the outside of the humerus where the deltoid muscle attaches |