Noun

1. A round nodule, small eminence, or warty outgrowth found on bones especially for the attachment of a muscle or ligament. A small elevation on the surface of a tooth.
2. A small rounded wartlike protuberance of the roots of some leguminous plants; the lip of certain orchids, cacti.
3. A small rounded nodule forming the characteristic lesion of tuberculosis.
4. A mass of hyphae from which a mushroom is produced.