Etymology
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parochialism (n.)

"limited and narrow character or tendency, provincialism, narrow-mindedness and uncuriosity about the wider world," 1847, from parochial + -ism.

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ginormous (adj.)
by 1948, perhaps 1942, apparently originally a World War II military colloquialism, from a merger of gigantic + enormous.
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Spad (n.)
French biplane fighter of World War I, 1917, from French spad, from acronym of Societé pour Aviation et ses Dérivés.
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Wobbly (n.)
1914, member of Industrial Workers of the World (I.W.W.). Probably some sort of elaboration of the W aspect of the acronym.
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delouse (v.)

"clear of lice," 1918, from de- + louse (n.). First in reference to World War I armies. Related: Deloused; delousing.

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quisling (n.)

"national traitor," especially during World War II in Nazi-occupied countries, "collaborationist," 1940, from Vidkun Quisling (1887-1945), Norwegian fascist politician who headed the puppet government during the German occupation of Norway in World War II; shot for treason after the German defeat. First used in London Times of April 15, 1940, in a Swedish context.

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POW (n.)
also P.O.W., initialism (acronym) for prisoner of war, coined 1919 but not common until World War II.
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awol (adj.)

also a.w.o.l., military initialism (acronym) for absent without leave (itself attested by 1767 in a military context). In U.S. military use by 1917. According to the "Dictionary of Contemporary American Usage" (1957), pronounced as four letters in World War I, as a word in World War II.

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AEF 
also A.E.F., abbreviation of American Expeditionary Force, the U.S. military force sent to Europe in 1917 during World War I.
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llama (n.)

wooly-haired South American ruminant, relative of the Old World camels, c. 1600, from Spanish llama (1535), from Quechua (Inca) llama.

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