The "D" of MD, for short (3)
I believe the answer is:
doc
(Other definitions for doc that I've seen before include "Fox perhaps" , "Consultant" , "Medic, in short" , "scaled-down version of GP" , "Physician (colloq.)" .)
I believe the answer is:
doc
(Other definitions for doc that I've seen before include "Fox perhaps" , "Consultant" , "Medic, in short" , "scaled-down version of GP" , "Physician (colloq.)" .)