noun A physician; a member of the medical profession; one who is trained and licensed to heal the sick or injured. The final examination and qualification may award a doctor degree in which case the post-nominal letters are DO, DPM, MD, DMD, or DDS in the US, or MBBS or BDS in the UK.
If you still feel unwell tomorrow, see your doctor.
noun A person who has attained a doctorate, such as a Ph.D. or Th.D. or one of many other terminal degrees conferred by a college or university.
noun A veterinarian; a medical practitioner who treats non-human animals.
noun A nickname for a person who has special knowledge or talents to manipulate or arrange transactions.
noun A teacher; one skilled in a profession or a branch of knowledge; a learned man.
noun Any mechanical contrivance intended to remedy a difficulty or serve some purpose in an exigency.
the doctor of a calico-printing machine, which is a knife to remove superfluous colouring matter