咬紧牙关 yǎo jǐn yá guān

DEFINITIONS

  1. lit. to bite the teeth tightly (idiom); fig. to grit one's teeth and bear the pain
  2. to bite the bullet

CHARACTERS

咬 yǎo bite, gnaw
紧 jǐn tense, tight, taut; firm, secure
牙 yá tooth, molars, teeth; serrated
关 guān frontier pass; close; relation