0 Old HSK word(s):
一口咬定* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

一 one / a, an / alone
口 mouth / open end / entrance, gate
咬 bite, gnaw
定 decide, settle, fix
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual