papilla

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Noun papilla has 2 senses

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