What Does the “WC” Sign Outside Bathrooms Really Mean?

If you’ve ever seen the letters “WC” outside a public restroom and paused for a moment, you’re definitely not alone. Around the world, people encounter different signs for the same essential facility—bathroom, restroom, toilet, washroom, lavatory, or WC—and sometimes the variety can feel confusing.

The abbreviation “WC” is especially common in Europe and international spaces such as airports, train stations, hotels, and restaurants. While it may seem mysterious at first, its meaning is actually quite straightforward and rooted in the history of indoor plumbing and sanitation.