Definition of "carse"

In the Carse of Gowrie to all the flat land , which is a great proportion of the district , is a deep rich clay

1799, James Robertson, General View of the Agriculture in the County of Perth

[…] and the parish of St. Madois, now in the carse of Gowrie, is said to have been once on the southern side of the river. Such parts of the carse as are called inches, are elevated above the flat ground which has been covered with water. The soil of these eminences is […]

1842, The Topographical, Statistical, and Historical Gazetteer of Scotland, page 214

A carse is a district of country, consisting of deep horizontal depositions of alluvial or diluvial clay, on one or both sides of a considerable river; and may be of great or small extent, but generally comprehends a large tract of country […]

1846, Henry Stephens, The Book of the Farm ...: To which are Added, Explanatory Notes ..., page 66