part of has part glacier icefall FTT:842 Icefalls may be formed as glaciers flow through narrow openings in landmasses. envoPolar FTT:758 https://orcid.org/0000-0003-4808-4736 ice fall ice-fall A portion of a glacier characterized by rapid flow, a chaotic crevassed surface, and a pronounced, at times vertical, slope. https://en.wikipedia.org/wiki/Icefall crevasse land ice mass