Wörterbuch (en): Glass brick / Glass block
de: 
Glasbaustein (m)
fr: 
Brique de verre (f) / Bloc de verre (m)
it: 
Mattone di vetro
es: 
Ladrillo de vidrio (m) / Bloque de vidrio (m)
Square or rectangular, slightly opaque hollow bricks used to create translucent and non-load-bearing interior and exterior walls.

