earlet
/ˈɪəlɪt/noun
Zoology. The tragus of a bat's ear, especially when in the form of an erect fleshy structure in front of the pinna.
Origin
Early 17th century (in an earlier sense). From ear + -let, partly after French oreillette pendant earring, chamber of the heart, attachment to a church bell, and partly after classical Latin auricula auricle.