†P2. topping of the land: the sighting of the land from the top of a ship; the limit or distance at which this is possible. Obsolete.
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the world > space > distance > [noun] > limit of distance or reach > from which land visible from ship's top
topping of the land1666
1666 London Gaz. No. 77/1 Whitby, August 3. Several of our Fisherboats inform us that the Dutch Busses, and Doggers are fishing, a little off the Topping of the Land.