Bible Dictionaries
Thalweg

Webster's Dictionary

(1):

(n.) The line of continuous maximum descent from any point on a land surface, or that cutting all contours and angles.

(2):

(n.) A line following the lowest part of a valley, whether under water or not.

Bibliography Information
Webster, Noah. Entry for 'Thalweg'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thalweg.html. 1828.