To act as a medical doctor to.
Her children doctored her back to health.
To act as a medical doctor.
To make (someone) into an (academic) doctor; to confer a doctorate upon.
To physically alter (medically or surgically) a living being in order to change growth or behavior.
They doctored their apple trees by vigorous pruning, and now the dwarfed trees are easier to pick.
To genetically alter an extant species.
Mendel's discoveries showed how the evolution of a species may be doctored.
To alter or make obscure, as with the intention to deceive, especially a document.
To take medicine.
Treatment by a doctor.