cohabiter

Noun

 * 1) One who cohabits; a cohabitant.
 * 2) * 1628, (translator),  (original in Greek), History of the Peloponnesian War
 * neighbours and cohabiters of the same region, encompassed by the sea, and all called by one name, Sicilians.

Verb

 * 1) to cohabit, to live together