pián​shǒu​zhī​zú

to work one's fingers to the bone

  1. callus
    (bound form) callous on hand or foot; hard skin caused by labor
  2. hand
    the part of the arm from the wrist down, including the palm and fingers
  3. callus
    (bound form) a callus; thickened skin on the hands or feet, usually appearing in the compound 胼胝 pián​zhī
  4. nounverb
    foot
    (bound form) foot; leg; the lower extremity of the leg