(botany) a tiny outgrowth on the surface of a petal or leaf
a small nipple-shaped protuberance concerned with taste, touch, or smell
"the papillae of the tongue"
a small projection of tissue at the base of a hair or tooth or feather
a nipple-like protuberance on a part or organ of the body
a vascular process of connective tissue extending into and nourishing the root of a hair, feather, or developing tooth