A cavity caused by tissue destruction, usually because of infection, filled with pus and surrounded by inflamed tissue.
To form a pus-filled cavity, typically from an infection.
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.
A small rounded wartlike protuberance of the roots of some leguminous plants; the lip of certain orchids, cacti.