The bottom of a face, (specifically) the typically jutting jawline below the mouth.
The lower part of the front of an aircraft, below the nose.
A person of the upper class.
Talk.
The ability to withstand being punched in the chin without being knocked out.
The bottom part of a mobile phone, below the screen.
A lie, a falsehood.
A chinchilla.
To indicate or point toward (someone or something) with one's chin.
To perform a chin-up (exercise in which one lifts one's own weight while hanging from a bar).
To put one's chin on (something).
To punch or hit (someone)'s chin (part of the body).
To turn on or operate (a device) using one's chin; to select (a particular setting) using one's chin.
To put or hold (a musical instrument) up to one's chin.
Any of the mouth appendages of the Arthropoda.