DCHP-1 Online
water-line Obs. 
n. a waterway as a route followed by travellers in boats, canoes, etc.
- 1830 The greater part of this water-line is a chain of lakes, one of which, under the name of Lake Rossignol, they describe as extending for thirty miles in a direction at right angles to the course of their route.
- 1830 The greater part of this water-line is a chain of lakes, one of which, under the name of Lake Rossignol, they describe as extending for thirty miles in a direction at right angles to the course of their route.