D defs.my
Entry 2 senses Webster, 1913

Chin

/(chĭn)/ · IPA /t͡ʃɪn/
01 n. The lower extremity of the face below the mouth; the point of the under jaw.
  1. 1.
    The lower extremity of the face below the mouth; the point of the under jaw.
  2. 2.
    The exterior or under surface embraced between the branches of the lower jaw bone, in birds.(Zool.)