Piracy is the act of attacking and robbing ships at sea. For thousands of years, pirates sailed the oceans looking for merchant vessels to board and plunder. These criminals would steal cargo like gold, spices, silk, or whatever valuables the ship carried. Pirates operated outside the law, flying their own flags (often the famous skull and crossbones), and they made sailing dangerous for honest traders.

The most famous era of piracy was the 1600s and 1700s, when pirates like Blackbeard prowled the Caribbean and Atlantic. Some pirates became so troublesome that governments sent naval ships to hunt them down. Eventually, stronger navies and international cooperation made traditional piracy rare, though it still happens in a few dangerous waters today.

The word has taken on new meanings in modern times. When someone illegally copies music, movies, software, or books without paying for them, that's called piracy too. Just as ocean pirates stole physical cargo, digital pirates steal creative work. Illegally downloading a movie or copying software without permission is considered piracy because it takes something that belongs to someone else. The creators, whether musicians, filmmakers, or programmers, lose money they earned through their work.