Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun thalweg

2 senses of thalweg

Sense 1
thalweg -- (the middle of the chief navigable channel of a waterway that forms the boundary line between states)
       => boundary, edge, bound -- (a line determining the limits of an area)

Sense 2
thalweg -- (a line following the lowest points of a valley)
       => contour, contour line -- (a line drawn on a map connecting points of equal height)