hammerhead

noun
ham·​mer·​head | \ ˈha-mər-ˌhed How to pronounce hammerhead (audio) \

Definition of hammerhead

1 : the striking part of a hammer
2 : blockhead
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

Keep scrolling for more

Synonyms & Antonyms for hammerhead

Synonyms

airhead, birdbrain, blockhead, bonehead, bubblehead, chowderhead, chucklehead, clodpoll (or clodpole), clot [British], cluck, clunk, cretin, cuddy (or cuddie) [British dialect], deadhead, dim bulb [slang], dimwit, dip, dodo, dolt, donkey, doofus [slang], dope, dork [slang], dullard, dum-dum, dumbbell, dumbhead, dummkopf, dummy, dunce, dunderhead, fathead, gander, golem, goof, goon, half-wit, hardhead, idiot, ignoramus, imbecile, jackass, know-nothing, knucklehead, lamebrain, loggerhead [chiefly dialect], loon, lump, lunkhead, meathead, mome [archaic], moron, mug [chiefly British], mutt, natural, nimrod [slang], nincompoop, ninny, ninnyhammer, nit [chiefly British], nitwit, noddy, noodle, numskull (or numbskull), oaf, pinhead, prat [British], ratbag [chiefly Australian], saphead, schlub (also shlub) [slang], schnook [slang], simpleton, stock, stupe, stupid, thickhead, turkey, woodenhead, yahoo, yo-yo

Antonyms

brain, genius

Visit the Thesaurus for More 

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

The trip is spent searching out tiger, hammerhead, reef and nurse sharks, so the fish can be tagged and released. Kelli Bender, PEOPLE.com, "Up-Close and Personal Shark Encounters that Shark Week Fans Can Safely Enjoy All Year," 24 July 2019 On the top floor of the aquarium (The Vista), breathtaking views of cruise ships and Miami’s skyline compete with the 100-foot wide, 500,000-gallion tank where mahi-mahi, devil rays, tuna, and hammerhead sharks cavort. Necee Regis, BostonGlobe.com, "A look at Miami’s new Frost Science museum," 21 Mar. 2018 The sharks in these attacks have not been identified, but Naylor said blacktips, spinners and juvenile sandbar sharks are frequently found in the area, and on occasion, hammerhead and tiger sharks can be seen. Cnn.com Wire Service, The Mercury News, "Sharks bite 3 people in 24 hours at the same Florida beach," 5 Aug. 2019 The sharks in these attacks have not been identified, but Naylor said blacktips, spinners and juvenile sandbar sharks are frequently found in the area, and on occasion, hammerhead and tiger sharks can be seen. Allen Kim And Dylan Miettinen, CNN, "Sharks bite 3 people in 24 hours at the same Florida beach," 5 Aug. 2019 Scuba diving with hammerhead sharks, moray eels, and sea lions at Isla Espíritu Santo or stand-up paddle boarding at secluded beaches such as Balandra. Jenny Peters, National Geographic, "Baja California Sur: The ultimate road trip," 25 July 2019 Recent images from the Gulf Coast have shown a several sharks, including a hammerhead, near to the shore. Leada Gore | Lgore@al.com, al.com, "13-foot long hammerhead shark spotted off Navarre Beach," 26 June 2019 That list also includes hammerheads, lemon sharks and white sharks. Richard Tribou, orlandosentinel.com, "Florida man reels in 10-foot tiger shark, and followed the rules ... for now," 4 June 2019 The shark was a hammerhead believed to be about 13 feet long. Leada Gore | Lgore@al.com, al.com, "13-foot long hammerhead shark spotted off Navarre Beach," 26 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hammerhead.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of hammerhead

1562, in the meaning defined at sense 1

Keep scrolling for more

Learn More about hammerhead

Statistics for hammerhead

Last Updated

7 Oct 2019

Look-up Popularity

Time Traveler for hammerhead

The first known use of hammerhead was in 1562

See more words from the same year

Keep scrolling for more

More Definitions for hammerhead

hammerhead

noun
ham·​mer·​head | \ ˈha-mər-ˌhed How to pronounce hammerhead (audio) \

Kids Definition of hammerhead

: a shark that has a wide flattened head with the eyes spaced widely apart

Keep scrolling for more

Comments on hammerhead

What made you want to look up hammerhead? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

friendly or mild

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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