Latin, meaning: doctor, physician. 
Medicus is Latin for physician, and may more specifically refer to: ...
A medical orderly or doctor, as seen in variuos forms: - medicus castrorum - a doctor of the camp. - medicus chirurgus - a surgeon. - medicus duplicarius - a non-commissioned officer on double pay in the medical service. - medicus ordinarius - a medical officer. - medicus pecuarius - a vet. 
doctor, physician.