A to Z Blog Challenge: X

X is for Xystus - noun. A long portico in which athletes used to exercise in ancient Greece.
Since my Dictionary didn't have a word starting with X that I didn't know, I went online and learned that there are 120 words in the English language that start with an X.If you included words that are no longer in use, it amounts to 400 of them. Wow!
http://www.oxforddictionaries.com/words/how-many-words-begin-with-x