icefall
/ˈaɪsˌfɔːl/
noun
- A steep, frozen part of a glacier that resembles a frozen waterfall, often with crevasses and ice blocks.
- Photographers captured the stunning blue glow of the icefall at sunset.
- An icefall can shift suddenly, making it one of the most hazardous parts of a glacier.
- The climbers carefully navigated the dangerous icefall on Mount Everest.