Pronounced: YIPS, plural noun
Notes: Some people with specialized knowledge may know this word
Yesterday’s word
The word mullion is “a piece of stone, wood, metal, etc, dividing a window or other opening
First usage
Our word came into English in the mid-1500s
Background / Comments
I have often heard about “mullioned windows”, but I thought it meant something other than the simple definition above. I prefer to look out of windows and find that mullions tend to block the view somewhat. Our word came from some people transposing sounds in the Middle English word moniel, which came from the Anglo-Norman word moynel, which came from the Latin word medius (middle).
Richard's Vocabulary Word-of-the-Day 