Papilla (Latin, 'nipple') or papillae may refer to: In animals Papilla (fish anatomy), in the mouth of fish Basilar papilla, a sensory organ of lizards, amphibians and fish Dental papilla, in a developing tooth Dermal papillae, part of the skin Major duodenal papilla, in the duodenum Minor duodenal papilla, in the duodenum Genital papilla, a feature of the external genitalia of some animals Interdental papilla, part of the gums Lacrimal papilla, on the bottom eyelid Lingual papillae, small structures on the upper surface of the tongue Renal papilla, part of the kidney In plants and fungi Papilla (mycology), a nipple-shaped protrusion in the center of the cap Stigmatic papilla, part of the stigma (botany) See also Blister, a small pocket of body fluid within the upper layers of the skin Papillary muscle, a muscle in the heart Papilloma, a benign epithelial tumor Papule, a circumscribed, solid elevation of skin with no visible fluid