1. Geography a semicircular or crescent-shaped basin with steep sides and a gently sloping floor formed in mountainous regions by the erosive action of a glacier
an obsolete term for circle
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a natural bowl-shaped depression near the summit of a mountain, with steep rocky walls and a sloping concave bottom. It is formed by the action of small glaciers, snow fields, and subsequent frost weathering. Some cirques have permanent glaciers or firn accumulation; others have seasonal accumulations of snow, and very often the cirque bottom is filled with water(high-mountain lakes).
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
A steep elliptic to elongated enclave high on mountains in calcareous districts, usually forming the blunt end of a valley. Also known as corrie; cwm.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.