Smith's Bible Dictionary
Inn. The Hebrew word (malon) thus rendered literally signified "a lodging-place for the night". Inns, in our sense of the term were, as they still are, unknown in the East, where hospitality is religiously practiced.
The khans or caravanserais are the representatives of European inns, and these were established but gradually. The halting-place of a caravan was selected originally on account of its proximity to water or pasture, by which the travellers pitched their tents and passed the night. Such was undoubtedly the "inn" at which occurred the incident in the life of Moses narrated in Exodus 4:24. Compare Genesis 42:27. On the more frequented routes, remote from towns, Jeremiah 9:2, caravanserais were, in course of time, erected, often at the expense of the wealthy.
(A caravanserai is a large and substantial square building. Passing through strong gateway, the guest enters a large court, in the centre of which is a spacious raised platform, used for sleeping upon at night or for the devotions of the faithful during the day. Around this court are arranged the rooms of the building. - Editor.)
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Smith, William, Dr. Entry for 'Inn'. Smith's Bible Dictionary. https://www.studylight.org/dictionaries/eng/sbd/i/inn.html. 1901.