Judas window
n.— «Classroom surveillance is nothing new. Most classroom doors have a glass section—a Judas window in chalkie parlance—allowing management to surreptitiously spy on Sir’s lesson.» —“Yes, head boys must have the latest toys” by Hugh Reilly Scotsman (Glasgow, Scotland) Mar. 9, 2005. (source: Double-Tongued Dictionary)
Further reading
An anadrome is a word that forms a whole new word when you spell it backwards. For example, the word “stressed” spelled backwards is “desserts.” Some people’s first names are anadromes. There’s the girl named Noel...
What kind of book do people ask for most often in prison? Romance novels? No. The Bible? No. The most requested books by far are … dictionaries! A number of volunteer organizations gather and distribute used dictionaries to help inmates with...