What is Hospitium?

Legal Definition
Hospitium (Greek: ξενία, xenia, προξενία) is the ancient Greco-Roman concept of hospitality as a divine right of the guest and a divine duty of the host. Similar or broadly equivalent customs were and are also known in other cultures, though not always by that name. Among the Greeks and Romans, hospitium was of a twofold character: private and public.
-- Wikipedia
Legal Definition
An inn; a household. See Cromwell v. Stephens, 2 Daly (N. Y.) 17.
-- Black's Law Dictionary
Legal Definition
A place for the entertainment of guests. See 2 Daly (N. Y.), 15.
-- Ballentine's Law Dictionary