A specific type of boundary or line defining the edge of a fall or drop, often used in outdoor sports.

A term used in geographical contexts to denote the line along which a river falls or descends.

नदी की गिरावट की रेखा

English Usage: The fall-line of the river indicates where the terrain begins to drop steeply.

Hindi Usage: नदी की गिरावट की रेखा यह दर्शाती है कि क्षेत्र कहां तेज़ी से गिरना शुरू होता है।