Found 2 items, similar to Thalweg.
English → English (WordNet)
Definition: thalweg
thalweg
n 1: the middle of the chief navigable channel of a waterway that
forms the boundary line between states
2: a line following the lowest points of a valley
English → English (gcide)
Definition: Thalweg
Thalweg
\Thal"weg`\, n. [G., fr. thal valley + weg way. See
Dale;
Way.] (Physiography)
(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.
[Webster 1913 Suppl.]