chin 
/ˈtʃɪn/ noun
plural chins /ˈtʃɪn/ noun [count] : the part of the face below the mouth and above the neck — see picture at face; see also double chin
keep your chin up
: to stay cheerful and hopeful during difficult times
▪ He's still keeping his chin up despite all his health problems. ▪ (Keep your) chin up! Everything will work out for the best.
▪ He's still keeping his chin up despite all his health problems. ▪ (Keep your) chin up! Everything will work out for the best.
take it on the chin
informal 1 US : to be badly damaged or affected by something : to be hit hard by something
▪ Many investors took it on the chin yesterday as the stock market dropped sharply. 2 Brit : to accept something difficult or unpleasant without complaining
▪ The criticism was harsh but he took it on the chin and didn't try to blame anyone else.
▪ Many investors took it on the chin yesterday as the stock market dropped sharply.
▪ The criticism was harsh but he took it on the chin and didn't try to blame anyone else.
