We’ve all seen “WC” on public restroom signs, but do we actually know what it stands for? While the terms “bathroom” or “restroom” are more common, WC is short for “water closet.” This term dates back to the early days of indoor plumbing, when toilets were first installed indoors, separate from the bathroom, in small, enclosed spaces or “closets” with running water.
After TikToker Nathan explained this on social media, many viewers admitted they’d never known the meaning. Some commented, “I’ve wondered for years,” and “I had no idea!” It turns out, WC stands for a piece of plumbing history that solved a practical need in early homes.