trim line
trim line · trim lines
A clear line on the side of a valley formed by a glacier, marking the most recent…A clear line on the side of a valley formed by a glacier, marking the most recent highest extent of the glacier.
Meaning
2 sensesA clear line on the side of a valley formed by a glacier, marking the most recent highest extent of the glacier.
A similar phenomenon caused by floods, volcanic activity, or tsunamis.