C16: changed by folk etymology from Anglo-French chartrouse, after Chartosse (now Saint-Pierre-de-Chartreuse), village near Grenoble, France, the original homeof the Carthusian order
Charterhouse in American English
(ˈtʃɑrtərˌhaʊs)
noun
1.
a boys' school in Surrey, England, moved from its orig. location in London that was on the site of a Carthusian monastery