RhymeZone: confiner definitions

Definitions of confiner:

noun: One who, or that which, limits or restrains.
noun: (obsolete) A person who lives on the confines, boundary or edge; a neighbour.
noun: (obsolete) A person who lives within the confines; an inhabitant.
noun: (obsolete) A prisoner incarcerated for a set term.

(Definitions from Wiktionary)