To talk.
To talk to or with (someone).
To perform a chin-up (exercise in which one lifts one's own weight while hanging from a bar).
To punch or hit (someone)'s chin (part of the body).
To put or hold (a musical instrument) up to one's chin.
To turn on or operate (a device) using one's chin; to select (a particular setting) using one's chin.
To put one's chin on (something).
To indicate or point toward (someone or something) with one's chin.