A barracuda is a long, narrow fish with razor-sharp teeth that hunts in warm ocean waters around the world. Barracudas can grow up to six feet long and are built for speed, with sleek bodies that slice through water like torpedoes. Their mouths are filled with dozens of pointed teeth that jut out at odd angles, perfect for catching smaller fish they spot with their excellent eyesight.

These fish are fierce hunters, often lurking near coral reefs or swimming in small groups. A barracuda can accelerate from stillness to 35 miles per hour in an instant, ambushing prey before other fish even realize danger is near. Despite their fearsome appearance, barracudas rarely bother humans, though divers treat them with respect and keep their distance.

The word also describes a person who pursues what they want aggressively and relentlessly. In business, calling someone a barracuda means they're tough, competitive, and won't back down from a challenge. A lawyer known as a barracuda in the courtroom fights hard for every advantage. Like the fish, these people move fast and act decisively when they see an opportunity.