Etymology
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Mae West 
type of inflatable life jacket, 1940, military slang, in reference to the screen name of the buxom U.S. film star (1892-1980).
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west 

Old English west (adv.) "in or toward the west, in a westerly direction," from Proto-Germanic *west- (source also of Old Norse vestr, Old Frisian, Middle Dutch, Dutch west, Old High German -west, only in compounds, German west), which is of uncertain origin. Perhaps from PIE *wes-, reduced form of *wes-pero- "evening, night" (source also of Greek hesperos, Latin vesper "evening, west;" see vesper). Compare also High German dialectal abend "west," literally "evening." French ouest, Spanish oeste are from English.

As an adjective from late 14c.; as a noun from late 12c. West used in geopolitical sense from World War I (Britain, France, Italy, as opposed to Germany and Austria-Hungary); as contrast to Communist Russia (later to the Soviet bloc) it is first recorded in 1918. West Coast of the U.S. is from 1850; West End of London is from 1776; West Side of Manhattan is from, 1858. The U.S. West "western states and territories" originally (1790s) meant those just west of the Alleghenies; the sense gradually extended as the country grew. To go west "die" was "common during the Great War" [OED, 2nd ed.], perhaps from Celtic imagery or from the notion of the setting sun. In U.S. use, in a literal sense "emigrate to the western states or territories," from 1830.

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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.
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Fannie Mae (n.)
1948, from FNMA, acronym of "Federal National Mortgage Association," established 1938.
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Ginnie Mae 
1970, fleshed out in the form of a fem. proper name, from GNMA, acronym of Government National Mortgage Association.
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go west (v.)
19c. British idiom for "die, be killed" (popularized during World War I), "probably from thieves' slang, wherein to go west meant to go to Tyburn, hence to be hanged, though the phrase has indubitably been influenced by the setting of the sun in the west" [Partridge]. Compare go south.
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West Bank 
in reference to the former Jordanian territory west of the River Jordan, 1967.
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curvaceous (adj.)

1936, U.S. colloquial, from curve (n.) + facetious use of -aceous, the Modern Latin botanical suffix meaning "of a certain kind." First recorded reference is in "Screen Book" magazine, writing of Mae West.

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co-ed (n.)

also coed, 1886, American English, (first in Louisa Mae Alcott's "Jo's Boys"); short for "co-educational system;" 1889 as an adjective, short for co-educational; 1887 as a noun meaning "girl or woman student at a co-educational institution."

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western (adj.)
"toward or of the west," late Old English westerne "western, westerly, coming from the west," from west + -erne, suffix denoting direction. The noun meaning "book or movie about the Old West" is first attested 1909. Westerner is from 1837 as "person from the U.S. West," 1880 as "Euro-American," as opposed to Oriental.
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