A dowser is someone who tries to find underground water — or sometimes minerals, pipes, or lost things — by walking with a forked stick, two thin rods, or a pendulum and watching how it moves. People who trust the craft say the stick dips or the rods cross when water is near. Most scientists say there is no good proof that it works beyond luck and reading the land, though actually you will still meet dowsers in the countryside, and some well-diggers still call one in before they drill. The word itself is ordinary English, not slang; what feels uncertain is the job, which sits between folk skill and something many people do not take seriously.