HASHSHASHIN

Hasan ibn-al-Sabbah (died 1124), also known as the Old Man of the Mountains; founder of the Assassins (from Arabic hashshashin, or addicts of the drug hashish), a secret order of religious fanatics in Persia (now called Iran). —SHSBC Binder 23 Approved Glossary

referring to the Assassins, a secret order of religious fanatics founded in Iran by the Persian al-Hasan ibn-al-Sabbah (died 1124), also known as the "Old Man of the Mountains." (From Arabic hashshashzn, which literally means "addicts of the drug hashish.")