(3) an unknown quantity
(4) something shaped like or marked with the letter X
(5) the third letter in TeXas!
Now, Ya'll know that Webster was a TeXan...how else would #(5) definition get in there!
Oh All Right!!! So I made that up!!!
But not XANTH !!!
It's a real X word and is a form of the Greek word Xanthos for YELLOW!
Which brings me back to TeXas! The Xanth Rose is the Unofficial State Flower of TeXas!
"The Yellow Rose of Texas" is a traditional folk song. The original love song has become associated with the legend of "how a slave named Emily Morgan helped win the battle of San Jacinto, the decisive battle in the Texas Revolution."
The song is based on a Texas legend from the days of the Texas War of Independence. According to the legend, a woman named Emily D. West — a mulatto, and hence, the song's reference to her being "yellow" — who was seized by Mexican forces during the looting of Galveston seduced General Antonio López de Santa Anna, President of Mexico and commander of the Mexican forces. The legend credits her supposed seduction with lowering the guard of the Mexican army and facilitating the Texan victory in the Battle of San Jacinto waged in 1836 near present-day Houston. Santa Anna's opponent was General Sam Houston, who won the battle literally in minutes, and with almost no casualties.