plural guanacos also guanaco
: a long-necked South American mammal (Lama guanicoe) of dry, open country that has a soft, thick fawn-colored coat, is related to the camel but lacks a dorsal hump, and is considered to be the ancestor of the domesticated llama compare alpaca, llama

Illustration of guanaco

Illustration of guanaco

Examples of guanaco in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Wild guanacos—llama-like camelids with dark-red fur—darted across the road. — Jordan Salama, New Yorker, 12 Oct. 2026 The grassy area around the lodge is a favorite place for herds of guanacos (a close relative of the llama) to graze and sun themselves. — Condé Nast, Condé Nast Traveler, 6 Oct. 2026 Further Possibilities Hiding in an oak tree, pausing in a middle school hallway on crutches, discovering guanacos at the Syracuse Zoo. — Literary Hub, 2 Oct. 2026 In Chile’s famous Torres Del Paine National Park, a mother puma with her two cubs in tow attacks a guanaco. — Popular Science Team, Popular Science, 18 Feb. 2026 See All Example Sentences for guanaco

Word History

Etymology

Spanish, from Quechua wanaku

First Known Use

1604, in the meaning defined above

Time Traveler
The first known use of guanaco was in 1604

Browse Nearby Words

Cite this Entry

“Guanaco.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guanaco. Accessed 20 Oct. 2026.

Kids Definition

plural guanacos
: a South American mammal that has a soft thick light grayish brown coat and is related to the camels but lacks a hump

More from Merriam-Webster on guanaco

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!