(ש"ע) קו אפיק, קו המתמשך לאורך הנקודות הנמוכות של עמק; קו לאורך אמצע גוף מים המפריד בין שתי מדינות

n. line drawn between the lowest points along a valley; line along the middle of a body water that separates between two countries

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Noun
1. the middle of the chief navigable channel of a waterway that forms the boundary line between states
(hypernym) boundary, edge, bound
2. a line following the lowest points of a valley
(hypernym) contour, contour line

nm. thalweg, talweg, line drawn between the lowest points along a valley; line along the middle of a body water that separates between two countries

thalweg, line drawn between the lowest points along a valley; line along the middle of a body water that separates between two countries