Definition & Meaning of "glass block"

What is a "glass block"?

A glass block is a solid, molded piece of glass that is used in construction to create walls, windows, or decorative features. It is typically made of clear or frosted glass and has a hollow interior, which makes it lightweight and provides insulation. Glass blocks allow light to pass through while maintaining privacy, as their textured surfaces blur the view from the outside. They are often used in bathrooms, basements, or exterior walls for both aesthetic and functional purposes, offering a balance between privacy and natural light.