"X" is for . . .

What can I say? Use each of these words in a sentence.

* Xanadu (n) - an exotic, luxurious place. This word comes from the poem "Kubla Khan" by Samuel T. Coleridge.
* Xanax (n) - a pharmaceutical drug that is used to treat depression and anxiety.
* Xanthic (n) - yellowish in color; having to do with the compound xanthine.
* Xebec: A xebec is a special three-masted sailing ship used in the Mediterranean.
* Xenolith (n) - a fragment of a rock embedded inside another rock.
* Xenon: Scientists call xe...