Etymology
Advertisement
silver bullet (n.)
"very effective, almost magical remedy," 1808. The belief in the magical power of silver weapons to conquer foes goes back at least to ancient Greece (as in Delphic Oracle's advice to Philip of Macedon).
Related entries & more 
Advertisement
go south (v.)
"vanish, abscond," 1920s, American English, probably from mid-19c. notion of disappearing south to Mexico or Texas to escape pursuit or responsibility, reinforced by Native American belief (attested in colonial writing mid-18c.) that the soul journeys south after death.
Related entries & more 
West Indies 
Caribbean islands explored by Columbus, 1550s, reflecting the belief (or hope) that they were western outliers of the Indies of Asia. Related: West Indian, which is from 1580s in reference to the native inhabitants, 1650s in reference to European settlers there, and 1928 in reference to people of West Indian ancestry.
Related entries & more 
al Qaida 

also Al-Qaeda; name of a loosely structured jihadist movement founded c. 1989 by Osama bin Laden; from Arabic, literally "the base." A common Arabic term among Muslim radicals from the wider Islamic world who came to Afghanistan in 1980s and fought alongside local rebels against the Soviets, and who regarded themselves and their struggle not merely in Afghan terms but as the "base" or foundation of a wider jihad and revival in Islam. Used by Bin Laden's mentor, Abdallah Azzam, who referred to the "vanguard" which "constitutes the strong foundation [al-qaida al-sulbah] for the expected society." In U.S., the term first turns up in a CIA report in 1996.

Every Muslim, from the moment they realise the distinction in their hearts, hates Americans, hates Jews, and hates Christians. This is a part of our belief and our religion. For as long as I can remember, I have felt tormented and at war, and have felt hatred and animosity for Americans. [Osama bin Laden, interview aired on Al-Jazeera, December 1998]
Related entries & more