Esoteric, abstruse; (in particular) taught orally to select students and not disseminated.
Based on lectures or exposition by monologue.
Accessible only to the class itself or instances of it, and not to other classes or even subclasses.
Not publicly known; not open; secret.
Not shared with another patient.
Not accessible by the public.
Belonging to, concerning, or accessible only to an individual person or a specific group.
Protected from view or disturbance by others; secluded.
Secretive; reserved.
Not traded by the public.
Not in governmental office or employment.
A private lesson.
The genitals.
A soldier of the lowest rank in the army.
A doctor working in privately rather than publicly funded health care.
To make something hidden from the public (without deleting it permanently).