double chin
US /ˌdʌb.əl ˈtʃɪn/
UK /ˌdʌb.əl ˈtʃɪn/

1.
double menton
a fold of flesh under the chin, especially one caused by fat
:
•
He developed a double chin as he gained weight.
Il a développé un double menton en prenant du poids.
•
She tried exercises to reduce her double chin.
Elle a essayé des exercices pour réduire son double menton.