hammerhead

noun

ham·​mer·​head ˈha-mər-ˌhed How to pronounce hammerhead (audio)
1
: the striking part of a hammer
2
3
: any of a family (Sphyrnidae) of active voracious medium-sized sharks that have the eyes at the ends of lateral extensions of the flattened head see shark illustration

Examples of hammerhead in a Sentence

we despair of ever getting those hammerheads to buckle their seat belts without prodding
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.
Smooth hammerheads and blacktip sharks spent comparatively more time near the surface, whereas white sharks, spinner sharks, and dusky sharks were active throughout much of the water column. Melissa Cristina Márquez, Forbes.com, 1 Sep. 2025 In the daytime, the pair encountered the planarians, often called hammerhead worms, hiding under rotting logs or rocks. Lauren Liebhaber, Miami Herald, 28 Aug. 2025 Species include the Caribbean reef shark, oceanic white tips, great hammerheads, tiger sharks and bull sharks. Chloe Mayer, MSNBC Newsweek, 18 Aug. 2025 Stingrays are a staple in a Florida hammerhead's diet, along with grouper, sea catfish, a variety of bony fishes, sharks, crabs, and squid, per the FWC. Charlotte Phillipp, People.com, 4 Aug. 2025 See All Example Sentences for hammerhead

Word History

First Known Use

1562, in the meaning defined at sense 1

Time Traveler
The first known use of hammerhead was in 1562

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Cite this Entry

“Hammerhead.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hammerhead. Accessed 11 Sep. 2025.

Kids Definition

hammerhead

noun
ham·​mer·​head ˈham-ər-ˌhed How to pronounce hammerhead (audio)
: any of various active sharks of medium size that have the eyes at the ends of sideward extensions of the flattened head

More from Merriam-Webster on hammerhead

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