"papilla" in the noun sense
1. papilla
botany) a tiny outgrowth on the surface of a petal or leaf
2. papilla
a small nipple-shaped protuberance concerned with taste, touch, or smell
"the papillae of the tongue"
3. papilla
a small projection of tissue at the base of a hair or tooth or feather
Source: WordNet® (An amazing lexical database of English)
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