铆足劲儿

鉚足勁兒
mǎozújìnr
to exert all one's strength

CEDICT

Entry Composition

1 铆 mǎo
  1. to fasten with a rivet; to rivet
  2. to hammer in a rivet
  3. (coll.) to concentrate one's strength
2 足 zú
  1. (bound form) foot; leg
  2. sufficient; ample
  3. as much as; fully
3 劲儿 jìnr erhua variant of 劲 jìn

Related entries

使劲 shǐjìn to exert all one's strength
啄木鸟正在使劲地啄树干。

The woodpecker is pecking the tree trunk vigorously.

Source: Tatoeba

使尽 shǐjìn to exert all one's strength