A thickened rootstock.
A fleshy, thickened underground stem of a plant, usually containing stored starch, for example a potato or arrowroot.
A rounded, protuberant structure in a human or animal body.
A small rounded wartlike protuberance of the roots of some leguminous plants; the lip of certain orchids, cacti.
A small rounded nodule forming the characteristic lesion of tuberculosis.
A round nodule, small eminence, or warty outgrowth, especially those found on bones for the attachment of a muscle or ligament or small elevations on the surface of a tooth.