Old English herebeorg, from here troop, army + beorg shelter; related to Old High German heriberga hostelry, Old Norse herbergi
Word Origin and History for harbour
chiefly British English spelling of harbor (n. and v.); for spelling, see -or.
Encyclopedia Article for harbour
harbor
any part of a body of water and the manmade structures surrounding it that sufficiently shelters a vessel from wind, waves, and currents, enabling safe anchorage or the discharge and loading of cargo and passengers
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