Sinonim thalweg

English Thesaurus

1. a line following the lowest points of a valley (noun.communication)

hypernym	:	contour, contour line,
definition	:	a line drawn on a map connecting points of equal height (noun.communication)

2. the middle of the chief navigable channel of a waterway that forms the boundary line between states (noun.shape)

hypernym	:	bound, boundary, edge,
definition	:	a line determining the limits of an area (noun.shape)