: one that routs: such as
a
: a routing plane
b
: a machine with a revolving vertical spindle and cutter for milling out the surface of wood or metal
: one that routes
especially : a device that mediates the transmission routes of data packets over an electronic communications network (such as the Internet)
: a horse trained for distance races

Examples of router 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.
Noun
Check your router settings and make sure the firewall remains enabled. Kurt Knutsson, FOXNews.com, 28 Aug. 2026 The discounts apply to high-speed internet service as well as Wi-Fi access points, routers and switches. Linda Jacobson, Los Angeles Times, 26 Aug. 2026 Traffic between somebody else's router and somebody else's laptop, say in a random coffee shop or an airport, can provide the radio field that your body disturbs to create your specific signature. New Atlas, 26 Aug. 2026 As its name suggests, OpenRouter makes AI router software—a type of tool that allows organizations to select the best and most cost-efficient AI models for every task. Alexei Oreskovic, Fortune, 20 Aug. 2026 See All Example Sentences for router

Word History

Etymology

Noun (1)

rout entry 4 + -er entry 2

Noun (2)

route entry 2 + -er entry 2

Noun (3)

route entry 1 (in sense "race of a mile or more") + -er entry 2

First Known Use

Noun (1)

1818, in the meaning defined above

Noun (2)

1903, in the meaning defined above

Noun (3)

circa 1951, in the meaning defined above

Time Traveler
The first known use of router was in 1818

Browse Nearby Words

Cite this Entry

“Router.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/router. Accessed 30 Aug. 2026.

Kids Definition

router

1 of 2 noun
: a machine for cutting out the surface of wood or metal

router

2 of 2 noun
: one that routes
especially : a device that sends data from one place to another within a computer network or between computer networks

More from Merriam-Webster on router

Love words? Need even more definitions?

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