arroyo

noun

ar·​royo ə-ˈrȯi-(ˌ)ō 

-ə

plural arroyos

1

: a watercourse (such as a creek) in an arid region

2

: a water-carved gully or channel

Examples of arroyo in a Sentence

Recent Examples on the Web

And while our street was close enough to the national forest that bears and bobcats were not uncommon sights, it was also separated from it by a dry arroyo and five blocks of houses in between. —Josh Eells, Rolling Stone, 13 Feb. 2025

Following last year’s Bridge fire, which scorched habitat in the East Fork of the San Gabriel River, 503 rainbows — in addition to Santa Ana speckled dace, Santa Ana sucker and arroyo chub — were relocated to nearby streams, Evans said. —Lila Seidman, Los Angeles Times, 14 Jan. 2025

Flowers included arroyo lupine and California poppies. —Jaclyn Cosgrove, Los Angeles Times, 17 Oct. 2024

Shortly after some removals, arroyo chub, another native fish, started moving upstream, Jacobson said. —Lila Seidman, Los Angeles Times, 31 July 2024

Word History

Etymology

borrowed from Spanish, probably of pre-Latin substratal origin

Note: The word arroyo is traditionally compared with Latin arrugia, a word used by Pliny (Historia naturalis 33.70) for galleries excavated into mountainsides in the Iberian peninsula to extract gold. Presumably the word was extended from the sense "artificial passageway" to "natural passageway" (or vice versa, if "natural passageway" was the original sense). In medieval documents of Asturias, from 775 on, arogium and variants occur as latinized forms of the vernacular word.

First Known Use

1777, in the meaning defined at sense 2

Kids Definition

arroyo

noun

ar·​royo ə-ˈrȯi-ə 

-ˈrȯi-(ˌ)ō

plural arroyos

1

: a waterway (as a creek) in a dry region

2

: an often dry gully or channel carved by water