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  • arroyo
    arroyo
    noun
    (chiefly in southwest U.S.) a small steep-sided watercourse or gulch with a nearly flat floor: usually dry except after heavy rains.
  • Arroyo
    Arroyo
    noun
    Gloria Macapagal. born 1947, Filipino stateswoman; vice-president of the Philippines (1998–2001); president (2001–10)
Synonyms

arroyo

American  
[uh-roi-oh] / əˈrɔɪ oʊ /

noun

arroyos plural
  1. (chiefly in southwest U.S.) a small steep-sided watercourse or gulch with a nearly flat floor: usually dry except after heavy rains.


Arroyo 1 British  
/ əˈrɔɪjəʊ /

noun

  1. Gloria Macapagal. born 1947, Filipino stateswoman; vice-president of the Philippines (1998–2001); president (2001–10)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

arroyo 2 British  
/ əˈrɔɪəʊ /

noun

  1. a steep-sided stream bed that is usually dry except after heavy rain

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

arroyo Scientific  
/ ə-roiō /
  1. A small, deep gully or channel of an ephemeral stream. Arroyos usually have relatively flat floors and are flanked by steep sides consisting of unconsolidated sediments. They are usually dry except after heavy rainfall.


Other Word Forms

Noun Inflected Forms

Etymology

Origin of arroyo

1800–10, < Spanish; akin to Latin arrūgia mine shaft

Explanation

Ever see a dried out stream or brook that sometimes, after a good rain, is racing with water? That's an arroyo, or a creek that dries out and fills with water depending on the time of year and weather. The Arroyo Seco in Southern California is an example of a well-known arroyo. Its name, which translates from Spanish to mean "dry stream" is an apt way to describe what an arroyo is — dry at times, and flowing at others. An arroyo can be natural or man-made. The Los Angeles River, for example, is an arroyo that runs along a concrete channel and helps distribute fresh water to the city.

Keep Reading on Vocabulary.com

Vocabulary lists containing arroyo

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Lummis built his house, El Alisal, with rocks dragged out of the arroyo, and opened it for business, the business of entertaining L.A.’s visiting luminaries.

From Los Angeles Times Jul. 17, 2024

“Flash, urban, and arroyo flooding is possible with the potential for significant impacts.”

From Seattle Times Aug. 17, 2023

"The water was so strong it pushed him into the arroyo," said Zamora, using the term for an usually dry riverbed that runs during heavy rain.

From Reuters Aug. 8, 2022

Boris, 29, ran across the muddy arroyo of the Rio Grande on Dec. 3 from Ciudad Juárez to El Paso.

From Washington Post Dec. 16, 2021

Up ahead, he could see where the highway dipped across an arroyo.

From "Ceremony:" by Leslie Marmon Silko

Zapatero's spokesman, Luis Arroyo, said "he will provide explanations before the judge" in relation to the jewels.

From BBC Jun. 12, 2026

She also spread Theodore Payne’s Rainbow Mix wildflower seeds throughout the landscape, including California poppies, Arroyo lupine, Desert Bluebells and Clarkia.

From Los Angeles Times Jun. 10, 2026

Sheriff’s deputies even used ground-penetrating radar and cadaver dogs to search the property of his father, Ruben Flores, in Arroyo Grande in 2021.

From Los Angeles Times May 9, 2026

Authorities have been at the Arroyo Grande home of Susan Flores in San Luis Obispo County this week, scanning the ground for any signs of human decomposition.

From Los Angeles Times May 8, 2026

The highway snaked through green rolling hills past Nipomo, Arroyo Grande, and Pismo Beach until we reached San Luis Obispo.

From "Breaking Through" by Francisco Jiménez

Over a century, L.A.’s arroyos have drawn graffitists and their chroniclers — hobo, cholo and otherwise.

From Los Angeles Times Oct. 11, 2023

To steer clear of the surveillance towers, people have pushed deeper into the mountains and now hunker down in arroyos and other crevices in the desert for longer periods of time.

From Washington Post Feb. 22, 2022

Washes and arroyos – drainage channels that are dry except during heavy rainstorms – can turn into raging currents within minutes, strong enough to carry away cars and people.

From Salon Oct. 16, 2021

It winds through an arid landscape of garbage-strewn arroyos, yucca and sagebrush, without paved roads or sewerage.

From New York Times Sep. 2, 2021

The earth was eroded to gray clay, and deep arroyos cut through the length of the valley between the mesas.

From "Ceremony:" by Leslie Marmon Silko

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