| Term: | Icefall |
| Definition: | Part of a glacier with rapid flow and a chaotic crevassed surface; occurs where the glacier bed steepenes or narrows. |
| Term: | Icefall |
| Definition: | A steep reach of a glacier where the ice becomes heavily crevassed, commonly when flowing over a bedrock step. |
| Term: | Icefall |
| Definition: | Part of a glacier where the ice flows over a bed with a very steep gradient, typically at a higher rate than both above and below. As a result the surface is fractured and heavily crevassed. In a river system, this would be a waterfall. |
| Term: | Icefall |
| Definition: | Heavily crevassed area on a glacier where the descent is steep. |
| Term: | Icefall |
| Definition: | That portion of a glacier where a sudden steepening of descent causes a chaotic breaking up of the ice. |