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
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.
Each envelope containing the clue was inside a box filled with some frightful creature — rats, snakes, a tarantula, millipedes, and cockroaches. Lauren Huff, Entertainment Weekly, 15 Jan. 2026 Sacramento County health inspectors closed eight eateries including a local market, movie theater and supermarket due to a lack of hot water, cockroaches and rodent droppings. Veronica Fernandez-Alvarado january 14, Sacbee.com, 14 Jan. 2026 Housing advocates were beating the drum over tenant protections, lamenting a lack of enforcement from city regulators as residents lived in buildings without heat and hot water, or their units were infested with cockroaches and bed bugs. Sam Tabachnik, Denver Post, 8 Jan. 2026 The leaves are also a home for pests (including cockroaches) and create the perfect environment for lawn fungus to thrive. Mary Marlowe Leverette, Southern Living, 29 Dec. 2025 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 17 Jan. 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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