papilla
/pəˈpɪlə/noun
(pl. papillae /-ˈliː/)
1- a small rounded protuberance on a part or organ of the body（人的）乳头, 乳突; 乳头状物。
1.1
- a small fleshy projection on a plant（植物的）乳突。
派生词
papillary
adjectivepapillate
/pəˈpɪleɪt/ adjectivepapillose
/ˈpæpɪləʊs/ adjective词源
late 17th cent.: from Latin, literally 'nipple', diminutive of papula 'small protuberance'.