hammerhead

Most people first think of the shark, a striking sea animal named for its wide, hammer-shaped head. That unusual head helps it sense movement and find prey more easily. Outside the ocean, the word can also mean the heavy top part of a hammer tool. In everyday speech, it can describe someone who is stubborn or a bit thick-headed, a person who will not change their mind easily. You might say, "He's a bit of a hammerhead when it comes to his routine; he refuses to change a single thing."

The most familiar meaning of "hammerhead" is the shark, known for its wide head that stretches out on both sides. This special shape is not only easy to recognize, but also helps the animal sense its surroundings and track prey. Hammerhead sharks are among the most memorable creatures in the sea, and their shape has made them famous even among people who know little about marine life.

But the word is not limited to sharks. It can also mean the head of a hammer, the solid top part used for striking. In engineering and shipping, a "hammerhead crane" is a very large crane with a long horizontal arm, a shape that gives it its name.

Figuratively, the word can also be used for a person who is stubborn, dull, or difficult to reason with. In that sense, it is usually not a compliment. You might hear someone say, "Don't bother arguing with her; she's a complete hammerhead once she makes up her mind!" Whether you are talking about sea life, tools, cranes, or a very stubborn person, the word usually brings to mind strength, blunt force, and a very clear shape.