Definitions of chin:

• noun:   the protruding part of the lower jaw
• noun:   Kamarupan languages spoken in western Burma and Bangladesh and easternmost India
• verb:   in gymnastics: raise oneself while hanging from one's hands until one's chin is level with the support bar
• name:  A surname (common: 1 in 14285 families; popularity rank in the U.S.: #1746)
• name:  A female given name (rare: 1 in 50000 females; popularity rank in the U.S.: #2464)