noun🔗ShareThe visible part of the ear that resides outside of the head, the auricle; outer ear excluding the ear canal."The doctor examined the child's pinna for signs of infection, carefully looking at the outer ear. "anatomyorganpartbodyphysiologyChat with AIVocabulary GamePractice Reading
noun🔗ShareA leaflet or primary segment of a pinnate compound leaf."The botanist pointed to a fern and explained that each small, individual leaflet along its stem was called a pinna. "biologyplantpartChat with AIVocabulary GamePractice Reading
noun🔗ShareA feather, wing, fin, or other similar appendage."The scientist carefully examined the fossilized pinna of the ancient fish, noting its delicate structure. "anatomyanimalbiologypartorganismChat with AIVocabulary GamePractice Reading
