
1) Arroyo 2) Coulee 3) Flume 4) Ravine
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https://www.crosswordclues.com/clue/gulch

1) Coulee 2) Deep ravine 3) Deep, dry bed 4) Exclusively Anglo word 5) Exclusively Saxon word 6) Flash flood area 7) Flume 8) Gorge 9) Impact crater on Mars 10) Mean Miss of The Wizard of Oz 11) Miss who took Toto 12) Narrow ravine 13) Narrow ravine cut by a stream 14) Product of erosion 15) Ravine
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https://www.crosswordclues.com/clue/gulch

In xeric lands, a gulch is a deep V-shaped valley formed by erosion. It may contain a small stream or dry creek bed and is usually larger in size than a gully. Sudden intense rainfall upstream may produce flash floods in the bed of the gulch. In eastern Canada, gulch refers to: ...
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http://en.wikipedia.org/wiki/Gulch
[horse] Guided by Hall of Fame trainer LeRoy Jolley, Gulch was a precocious two-year-old, winning the Grade I Hopeful Stakes at Saratoga Race Course with Angel Cordero, Jr. astride by 3½ lengths. He was undefeated that year going into the Breeders` Cup Juvenile, having won five starts in New York, but placed fifth to Capote, behind Alysheb...
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http://en.wikipedia.org/wiki/Gulch_(horse)

• (n.) A ravine, or part of the deep bed of a torrent when dry; a gully. • (n.) A glutton. • (v. t.) To swallow greedily; to gulp down. • (n.) Act of gulching or gulping.
Found on
http://thinkexist.com/dictionary/meaning/gulch/

a small, steep valley, usually occupied by a stream
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Gulch noun 1. Act of gulching or gulping. [ Obsolete]
2. A glutton. [ Obsolete]
B. Jonson. 3. A ravine, or part of the deep bed of a torrent when dry; a gully.
Found on
http://www.encyclo.co.uk/webster/G/66
Gulch transitive verb [ Middle English
gulchen ; confer dial. Swedish
gölka to
gulch , Dutch
gulzig greedy, or English
gulp .] To swallow greedily; to gulp down. [ Obsolete]
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http://www.encyclo.co.uk/webster/G/66

A ravine.
Found on
http://www.legendsofamerica.com/

[
n] - a narrow gorge with a stream running through it
Found on
http://www.webdictionary.co.uk/definition.php?query=gulch

a narrow ravine or small canyon.
Found on
https://www.encyclo.co.uk/local/22703

a deep, narrow ravine, esp. one marking the course of a stream or torrent.
Found on
https://www.infoplease.com/dictionary/gulch
No exact match found.