the.com/berm
The earth's polite suggestion that water and traffic stop right here.
means A raised ledge, bank, or mound of earth—often beside a road, ditch, or canal—built to redirect water or define a boundary.
from From Dutch berm, the strip of ground along a dike, marching into English via military fortification where it meant the shelf between trench and rampart.
war dutyCastle ramparts used berms to catch falling debris.
snow lifePlow-piled snow ridges are berms too.
golf cameoCourse designers sculpt berms to hide and steer.