Etymology
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mayday (interj.)

international radio-telephone distress call, 1923, apparently an Englished spelling of French m'aider, shortening of venez m'aider "come help me!" But possibly a random coinage with coincidental resemblance:

"May Day" Is Airplane SOS
ENGLISH aviators who use radio telephone transmitting sets on their planes, instead of telegraph sets, have been puzzling over the problem of choosing a distress call for transmission by voice. The letters SOS wouldn't do, and just plain "help!" was not liked, and so "May Day" was chosen. This was thought particularly fitting since it sounds very much like the French m'aidez, which means "help me." ["The Wireless Age," June 1923]
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topaz (n.)
colored crystalline gem, late 13c., from Old French topace (11c.), from Latin topazus (source also of Spanish topacio, Italian topazio), from Greek topazos, topazion, of obscure origin. Pliny says it was named for a remote island in the Red or Arabian Sea, where it was mined, the island so named for being hard to find (from Greek topazein "to divine, to try to locate"); but this might be folk etymology, and instead the word might be from the root of Sanskrit tapas "heat, fire." In the Middle Ages used for almost any yellow stone. To the Greeks and Romans, possibly yellow olivine or yellow sapphire. In modern science, fluo-silicate of aluminum. As a color name from 1908.
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proxy (n.)

early 15c., procusie, proccy, prokecye, "agency of one who acts instead of another, office or authority of a substitute; letter of power of attorney," contraction of Anglo-French procuracie (c. 1300), from Medieval Latin procuratia "administration," from Latin procuratio "a caring for, management," from procurare "manage" (see procure). Also compare proctor (n.).

Meaning "person who is deputed to represent or act for another" is from 1610s. Of things, "that which takes the place of something else," 1630s. Meaning "vote sent by a deputy" is from 1650s in a Rhode Island context. Proxy war, one started or stoked by, but not directly involving, a major power is by 1955.

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clapper (n.)

late 13c., "something which strikes with a loud, sharp noise," agent noun from clap (v.). Meaning "tongue of a bell" is from late 14c. Old English had clipur. Meaning "hinged board snapped in front of a camera at the start of filming to synchronize picture and sound" is from 1940.

Clappering.—It is still necessary to warn clergymen and churchwardens against allowing the lazy and pernicious practice of 'clappering,' i.e. tying the bell-rope to the clapper, and pulling it instead of the bell. More bells have been cracked in that way than by all other causes together, and there is not the least excuse for it .... [Sir Edmund Beckett, "A Rudimentary Treatise on Clocks and Watches and Bells," London, 1883]
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restricted (adj.)

"limited, confined," 1830, past-participle adjective from restrict. Of government documents, etc., "secret, not for public release" it is recorded from 1944. Related: Restrictedly. The older adjective was simply restrict. In mid-20c. U.S., restricted was a euphemism for "off-limits to Jews" (1947).

Manager: "I'm sorry, Mr. Marx, but we can't let you use the pool; this country club is restricted."
Groucho: "Well, my daughter's only half-Jewish; could she go in up to her knees?" [there are many versions and variations of this story in print, some referencing a son instead, dating to his obituaries in 1977]
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bluestocking (n.)
also blue-stocking, 1790, derisive word for a woman considered too learned, traces to a London literary salon founded c. 1750 by Elizabeth Montagu on the Parisian model, featuring intellectual discussion instead of card games and in place of ostentatious evening attire simple dress, including notably Benjamin Stillingfleet's blue-gray tradesman's hose which he wore in place of gentleman's black silk. Hence the term, first applied in derision to the whole set by Admiral Boscawen. None of the ladies wore blue stockings. Borrowed by the neighbors in loan-translations such as French bas-bleu, Dutch blauwkous, German Blaustrumpf.
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correspondent (n.)

"one who communicates with another by letters," 1620s, from correspondent (adj.). The newspaper sense "one who sends regular communications in the form of letters from a distant location" is from 1711.

THE life of a newspaper correspondent, as may naturally be supposed, is one of alternate cloud and sunshine—one day basking in an Andalusian balcony, playing a rubber at the club on the off-nights of the Opera, being very musical when the handsome Prima Donna sings, and very light fantastic toeish when the lively Prima Ballerina dances; another day roughing it over the Balkan, amid sleet and snow, or starving at the tail of an ill-conditioned army, and receiving bullets instead of billets-doux. [New Monthly Magazine, vol. xci, 1852, p.284]
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burgeon (v.)
early 14c., "grow, sprout, blossom," from Anglo-French burjuner, Old French borjoner "to bud, sprout," from borjon "a bud, shoot, pimple" (Modern French bourgeon), a word of uncertain origin. Perhaps from Vulgar Latin *burrionem (nominative *burrio), from Late Latin burra "flock of wool," itself of uncertain origin. Some sources (Kitchin, Gamillscheg) say either the French word or the Vulgar Latin one is from Germanic (compare Old High German burjan "to raise, lift up"). The English verb is perhaps instead a native development from burjoin (n.) "a bud" (c. 1300), from Old French. According to OED, it died out by 18c. except as a technical term in gardening, and was revived early 19c. in poetry. Related: Burgeoned; burgeoning.
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blanket (n.)

c. 1300, "coarse white woolen stuff," also "a large oblong piece of woolen cloth used for warmth as a bed-covering" (also as a cover for horses), from Old French blanchet "light wool or flannel cloth; an article made of this material," diminutive of blanc "white" (see blank (adj.)), which had a secondary sense of "a white cloth."

As an adjective, "providing for a number of contingencies," 1886 (blanket-clause in a contract). Wet blanket (1830) is from the notion of a person who throws a damper on social situations in the way a wet blanket smothers a fire. In U.S. history, a blanket Indian (1859) was one using the traditional garment instead of wearing Western dress.

Only 26,000 blanket Indians are left in the United States. [Atlantic Monthly, March 1906]
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Cenozoic (adj.)

"the third great geological period," 1841, Cainozoic, from Latinized form of Greek kainos "new, fresh, recent, novel" (see recent) + zōon "animal," but here with a sense of "life" (from PIE root *gwei- "to live"). The era that began with the demise of the dinosaurs and the rise of "recent" species and continues to the present; it also is known as the Tertiary. Compare Paleozoic, Mesozoic.

We observe that Lyell, in his geological works, even the most recent, uses the word Cainozoic instead of Coenozoic or Cenozoic. Why the propounder of the terms Eocene, Miocene, etc., should thus spell the word is incomprehensible. If he is right in it, then to be consistent he ought to say Eocain, Miocain, Pliocain, Post-pliocain; for all have the same root καινός. [American Journal of Sciences and Arts, 1873]
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