Your chin is the part of your face that is below your mouth and above your neck. a double chin He rubbed the gray stubble on his chin. Chinese. T'ien chin Chin Hills Chin dynasty Chin sha River
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in gymnastics: raise oneself while hanging from one's hands until one's chin is level with the support bar
the protruding part of the lower jaw in gymnastics: raise oneself while hanging from one's hands until one's chin is level with the support bar