(n.) A tumor formed by hypertrophy of the papillae of the skin or mucous membrane, as a corn or a wart.

bilge blain bleb blister blob boss bow bubble bulb bulge bulla bump bunch burl button cahot chine clump condyle convex dowel ear flange flap gall gnarl handle hill hump hunch jog joggle knob knot knur knurl lip loop lump mole mountain nevus nub nubbin nubble peg rib ridge ring shoulder spine stud style tab tubercle tubercule verruca vesicle wale wart welt