Lynchpin is a 8 letter English word. It's valid Words with friends word worth 21 points.
You can make 106 anagrams from letters in lynchpin (chilnnpy).
1350-1400; unexplained alteration of Middle English lynspin, equivalent to lyns, Old English lynis axle-pin (cognate with German Lünse) + pin pin
And it is the actions of the freedom fighters within the country that will prove to be the lynchpin in the conflict.
Saudi Arabia is the lynchpin,” says Edelman, “the key country.