The phrase "opaque glass" refers to glass that is not transparent or see-through. Instead, it is cloudy or misty, making it difficult to see objects on the other side.
Sentences with «opaque glass»
The owners created a huge window with opaque glass to offer privacy from neighbouring houses and to allow a soft light to filter through. (idealhome.co.uk)
They're made from opaque glass and look absolutely real. (geekwrapped.com)
Rather than having blinds, the couple added opaque glass for privacy. (idealhome.co.uk)