Longman Dictionary of Contemporary English homepage

one-way mirror

noun
     
one-way mirror [countable]
a mirror which can be used as a window by people secretly watching from the other side of it

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary