- papilla - a small nipple-shaped protuberance concerned with taste, touch, or smell; "the papillae of the tongue"
--1 is a kind of process, outgrowth, appendage
--1 is a part of sense organ, sensory receptor, receptor- papilla - a small projection of tissue at the base of a hair or tooth or feather
--2 is a kind of process, outgrowth, appendage
- papilla - a small projection of tissue at the base of a hair or tooth or feather