Noun(lower) jaw; chin; mentum · chatterbox

Noun, Suru verb, Transitive verbbossing someone around; having a person under one's control

Nounyi (hexagram 27 of the I Ching: the corners of the mouth)

Expressions (phrases, clauses, etc.), Godan verb with 'u' endingto set someone to work in an arrogant fashion; to push someone around