Noun
- 1. papilla, process, outgrowth, appendage
- usage: (botany) a tiny outgrowth on the surface of a petal or leaf
- 2. papilla, process, outgrowth, appendage
- usage: a small nipple-shaped protuberance concerned with taste, touch, or smell; "the papillae of the tongue"
- 3. papilla, process, outgrowth, appendage
- usage: a small projection of tissue at the base of a hair or tooth or feather
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