A generally nonmalignant growth on the surface of a mucous membrane
.... Thickened 
and reddened area of the epidermis, usually associated with aging or skin... [DOC] [TLE] Polyp | definition of polyp by Medical dictionary [PAR] A usually nonmalignant growth or tumor protruding from the mucous lining of an 
... a small tumorlike growth that projects from a mucous membrane surface.