A person confined to an institution such as a prison (as a convict) or hospital (as a patient)
A person who occupies or dwells within a dwelling-house. The word came to be used to refer to temporary inhabitants such as guests in a hotel, students in an on-campus dormitory, patients in a hospital, or prisoners
{i} one who is imprisoned in a jail, prisoner; one who is confined to a hospital; one who lives with others in the same house (Archaic)
One who lives in the same house or apartment with another; a fellow lodger; one of the occupants of an asylum, hospital, or prison; one who occupies or lodges in any place or dwelling