Definition of "solan"

There, if you are in luck, you will find the tide out and the place fordable dryshod for a man on a horse. But if the tide runs, you will do well to sit down on the sands and content yourself till it turn, or it will be the solans and scarts of the Solway that will be seeing the next of you.

1902, John Buchan, The Outgoing of the Tide