More on Ear-finger from Infoplease:

• Ear-finger - Ear-finger The little finger, which is thrust into the ear if anything tickles it. Source: ...
• Finger - Finger (Anglo-Saxon, finger). The ear finger, digitus auricularis—i.e. the little finger. The ...
• Dictionary of Phrase and Fable: E - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "E"