咬定牙關 yǎo dìng yá guān

DEFINITIONS

  1. see 咬緊牙關|咬紧牙关[yao3 jin3 ya2 guan1]

CHARACTERS

咬 yǎo bite, gnaw
定 dìng decide, settle, fix
牙 yá tooth, molars, teeth; serrated
關 guān frontier pass; close; relation