捋臂揎拳

luōbìxuānquán
  1. lit. to push up one's sleeves and bare one's fists
  2. to be eager to get started

CEDICT

捲起臂上袖子，伸出拳头。形容粗野凶暴的样子。

重編國語辭典

Entry Composition

1 捋 luō to hold sth long and run one's hand along it
2 臂 bì arm
3 揎 xuān
  1. to roll up one's sleeves
  2. to slap with the palm
4 拳 quán
  1. fist
  2. boxing