ladybug

noun

la·​dy·​bug ˈlā-dē-ˌbəg How to pronounce ladybug (audio)
: any of numerous small nearly hemispherical often brightly colored often spotted beetles (family Coccinellidae) of temperate and tropical regions that usually feed both as larvae and adults on other insects (such as aphids)

called also lady beetle, ladybird, ladybird beetle

Illustration of ladybug

Illustration of ladybug

Examples of ladybug 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.
Introducing beneficial insects like ladybugs is one way to treat these pests. Michelle Mastro, Martha Stewart, 29 Apr. 2026 As companion plants for celery, cosmos attract beneficial insects such as ladybugs, lacewings, hoverflies, and parasitic wasps, providing natural pest control and supporting pollination. Lauren Landers, Better Homes & Gardens, 28 Apr. 2026 In return, the ants defend the aphids from natural predators like ladybugs, allowing their numbers to surge out of control, leaving weak, disease-prone plants. Mary Marlowe Leverette, Southern Living, 23 Apr. 2026 The ladybugs, like the worm poop fertilizer, are a newer facet of Zeni’s quest to spread the good word about the mystique of an heirloom tomato. Zareen Syed, Chicago Tribune, 22 Apr. 2026 See All Example Sentences for ladybug

Word History

Etymology

Our Lady, the Virgin Mary

First Known Use

1699, in the meaning defined above

Time Traveler
The first known use of ladybug was in 1699

Browse Nearby Words

Cite this Entry

“Ladybug.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ladybug. Accessed 1 May. 2026.

Kids Definition

ladybug

noun
la·​dy·​bug -ˌbəg How to pronounce ladybug (audio)
: any of numerous small roundish-backed often brightly colored and spotted beetles that usually feed both when young and adult on other insects (as aphids)

More from Merriam-Webster on ladybug

Love words? Need even more definitions?

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

More from Merriam-Webster