ear lappet
/ˈɪə ˌlapɪt/noun
1An ear flap on a cap or hat that protects the ear in cold weather; = ear tab. Usually in plural.
2 Ornithology. Especially in the junglefowl (genus Gallus): an area of naked skin below the ear.
Origin
Late 17th century; earliest use found in John Ogilby (1600–1676), publisher and geographer. From ear + lappet.