from The Century Dictionary and Cyclopedia
- n. Money levied for the maintenance of lighthouses; light-dues.
Sorry, no etymologies found.
That act began with the announcement that "the peaceful navigation of the Mississippi River is hereby declared free to the citizens of any of the States upon its borders, or upon the borders of its navigable tributaries," and its provisions secure that freedom for "all ships, boats, or vessels," with their cargoes, "without any duty or hindrance, except light-money, pilotage, and other like charges." [