from
The Collaborative International Dictionary of English v.0.48
Water course \Wa"ter course`\
1. A stream of water; a river or brook. --Isa. xliv. 4.
[1913 Webster]
2. A natural channel for water; also, a canal for the
conveyance of water, especially in draining lands.
[1913 Webster]
3. (Law) A running stream of water having a bed and banks;
the easement one may have in the flowing of such a stream
in its accustomed course. A water course may be sometimes
dry. --Angell. --Burrill.
[1913 Webster]