Pronunciation : Chin
Part of Speech : n.
Etymology : [AS. cin, akin to OS. kin, G kinn, Icel. kinn, cheek, Dan. & Sw. kind, L. gena, Gr. hanu. *232.]
Definition : 1. The lower extremity of the face below the mouth; the point of the under jaw.
2. (Zo?l.)
Defn: The exterior or under surface embraced between the branches of the lower jaw bone, in birds.
Source : Webster's Unabridged Dictionary, 1913