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1. Western US A deep gulch or ravine with sloping sides, often dry in summer.
2. Louisiana & Southern Mississippi
a. A streambed, often dry according to the season.
b. A small stream, bayou, or canal.
3. Upper Midwest A valley with hills on either side.
a. A stream of molten lava.
b. A sheet of solidified lava.
[Canadian French coulée, from French, flow, from couler, to flow, from Latin cōlāre, to filter, from cōlum, sieve.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Geological Science)
a. a flow of molten lava
b. such lava when solidified
2. (Physical Geography) Western US and Canadian a dry stream valley, esp a long steep-sided gorge or ravine that once carried melt water from a glacier
3. (Physical Geography) a small intermittent stream in such a ravine
[C19: from Canadian French coulée a flow, from French, from couler to flow, from Latin cōlāre to sift, purify; see colander]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. Chiefly Western U.S. and Western Canada. a deep ravine or gulch, usu. dry, that has been formed by running water.
2. a small valley.
3. a small intermittent stream.
[1800–10, Amer.; < Canadian French, French: a flowing, n. use of fem of coulé, past participle of couler to flow < Latin cōlāre to filter, strain, derivative of cōlum strainer]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.