thalweg

4 senses · Free VividLex dictionary · Thesaurus

1. n. the middle of the chief navigable channel of a waterway that forms the boundary line between states Source: wordnet
2. n. a line following the lowest points of a valley Source: wordnet
3. (a) A line following the lowest part of a valley, whether under water or not. (b) The line of continuous maximum descent from any point on a land surface, or that cutting all contours and angles. Source: webster
4. n the middle of the chief navigable channel of a waterway that forms the boundary line between states n a line following the lowest points of a valley Source: ecdict

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