
1) Dorset slang for course 2) River land in Scotland
Found on
https://www.crosswordclues.com/clue/carse

In Scottish geography, a Carse (the modern form of older Scots kerse) is an area of low-lying, typically alluvial and fertile land occupying certain Scottish river valleys, such as that of the River Forth. ==Carse of Forth == The Carse of Forth contrasts with the Ochil Hills to the north, from which it is separated by the Ochil Fault. The carse is...
Found on
http://en.wikipedia.org/wiki/Carse

• (n.) Low, fertile land; a river valley.
Found on
http://thinkexist.com/dictionary/meaning/carse/
Carse noun [ Of Celtic origin; confer W.
cars bog, fen.
carsen reed, Armor.
kars ,
korsen , bog plant, reed.] Low, fertile land; a river valley. [ Scot.]
Jomieson. Found on
http://www.encyclo.co.uk/webster/C/29

Carse is the name given in Scotland to a wide fertile valley.
Found on
http://www.probertencyclopaedia.com/browse/AC.HTM

Carse is Dorset slang for course.
Found on
http://www.probertencyclopaedia.com/browse/ZC.HTM
No exact match found.