luō​bì​xuān​quán

to roll up one's sleeves

  1. to rub along
    To hold something long and thin and run one's hand or palm along it; to roll up sleeves or strip leaves off a branch
  2. noun
    arm
    (bound form) the human arm, specifically from the shoulder to the wrist; an animal's forelimb
  3. to roll up sleeves
    To roll up or pull up one's sleeves, often to expose the arms.
  4. fist
    fist; a clenched hand