cockroach

noun

cock·​roach ˈkäk-ˌrōch How to pronounce cockroach (audio)
: any of an order or suborder (Blattodea synonym Blattaria) of chiefly nocturnal insects including some that are domestic pests compare german cockroach

Examples of cockroach in a Sentence

Recent Examples on the Web
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Additionally, cockroaches cause allergic reactions in people who live in the inner cities or southern parts of the United States. Miami Herald, 17 Feb. 2026 Meanwhile, the Bronx Zoo in New York has revived its annual tradition of naming one of the zoo’s thousands of Madagascar hissing cockroaches for $15. Julian Torres, CNN Money, 14 Feb. 2026 Why Madagascar hissing cockroaches are actually romantic Naming a roach for Valentine’s Day is a great gag, but also these critters are capable of hissing their way into your heart. Emma Gometz, Scientific American, 13 Feb. 2026 Meanwhile, a total of 17 eateries received yellow placards for health code violations ranging from a dead rodent, cockroaches in a paper towel dispenser and old food buildup on kitchen equipment. Veronica Fernandez-Alvarado february 13, Sacbee.com, 13 Feb. 2026 See All Example Sentences for cockroach

Word History

Etymology

by folk etymology from Spanish cucaracha cockroach

First Known Use

1616, in the meaning defined above

Time Traveler
The first known use of cockroach was in 1616

Cite this Entry

“Cockroach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cockroach. Accessed 27 Feb. 2026.

Kids Definition

cockroach

noun
cock·​roach -ˌrōch How to pronounce cockroach (audio)
: any of an order of quick-moving insects that have long antennae and leathery forewings, are mainly nocturnal, and include pests of human dwellings

Medical Definition

cockroach

noun
cock·​roach ˈkäk-ˌrōch How to pronounce cockroach (audio)
: any of an order or suborder (Blattodea synonym Blattaria) of chiefly nocturnal insects including some that are domestic pests see blatta, blattella, periplaneta

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