A firehose is a heavy-duty hose that firefighters use to spray large amounts of water at high pressure onto burning buildings. These thick, durable hoses can pump hundreds of gallons per minute, creating a powerful stream strong enough to knock a person over. Firefighters work in teams to control them because the force of the water makes them difficult to handle alone.

The term has become a vivid metaphor for being overwhelmed by too much information coming too fast. When a teacher assigns five projects in one day, or when you open your email to find a hundred messages, you might feel like you're drinking from a firehose: trying to absorb far more than you can possibly handle. The image captures that feeling of being blasted with more than you can process.

You'll also see firehose used to describe any overwhelming flood of content: a firehose of data pouring into a computer system, or a firehose of news during a major event. The word suggests not just quantity but intensity, like an actual firehose delivering water with such force that you couldn't possibly catch it all in a bucket.