What is "al-dakhwar"

Muhadhdhabuddin Abd al-Rahim bin Ali bin Hamid al-Dimashqi known as al-Dakhwar (1170–1230) was a leading Arab physician in the 13th century where he served various rulers of the Ayyubid dynasty. He was also administratively responsible for medicine in Cairo and Damascus. Al-Dakhwar educated or influenced most of the prominent physicians of Egypt and Syria in the century, including writer Ibn Abi Usaibia and Ibn al-Nafis, the discoverer of blood circulation in the human body.