bear (v.)youdaoicibaDictYouDict[bear 词源字典]
Old English beran "to bear, bring; bring forth, produce; to endure, sustain; to wear" (class IV strong verb; past tense bær, past participle boren), from Proto-Germanic *beran (cognates: Old Saxon beran, Old Frisian bera, Old High German beran, German gebären, Old Norse bera, Gothic bairan "to carry, bear, give birth to"), from PIE root *bher- (1) meaning both "give birth" (though only English and German strongly retain this sense, and Russian has beremennaya "pregnant") and "carry a burden, bring" (see infer).

Ball bearings "bear" the friction. Many senses are from notion of "move onward by pressure." Old English past tense bær became Middle English bare; alternative bore began to appear c. 1400, but bare remained the literary form till after 1600. Past participle distinction of borne for "carried" and born for "given birth" is from late 18c. To bear (something) in mind is from 1530s.[bear etymology, bear origin, 英语词源]
ChekayoudaoicibaDictYouDict
early Soviet secret police, 1921, from Russian initials of Chrezvychainaya Komissiya "Extraordinary Commission (for Combating Counter-Revolution);" set up 1917, superseded 1922 by G.P.U.
fountain (n.)youdaoicibaDictYouDict
early 15c., "spring of water that collects in a pool," from Old French fontaine "natural spring" (12c.), from Medieval Latin fontana "fountain, a spring" (source of Spanish and Italian fontana), from post-classical noun use of fem. of Latin fontanus "of a spring," from fons (genitive fontis) "spring (of water)," from PIE root *dhen- (1) "to run, flow" (cognates: Sanskrit dhanayati, Old Persian danuvatiy "flows, runs").

The extended sense of "artificial jet of water" (and the structures that make them) is first recorded c. 1500. Hence also fountain-pen (by 1823), so called for the reservoir that supplies a continuous flow of ink. "A French fountain-pen is described in 1658 and Miss Burney used one in 1789" [Weekley]. Fountain of youth, and the story of Ponce de Leon's quest for it, seem to have been introduced in American English by Hawthorne's "Dr. Heidegger's Experiment" (January 1837).
"Did you never hear of the 'Fountain of Youth'?" asked Dr. Heidegger, "which Ponce de Leon, the Spanish adventurer, went in search of two or three centuries ago?"
nacho (n.)youdaoicibaDictYouDict
according to "The Dallas Morning News" [Oct. 22, 1995] and other sources, named for restaurant cook Ignacio Anaya, who invented the dish in the Mexican border town of Piedras Negras in 1943.
needle (n.)youdaoicibaDictYouDict
Old English nædl, from Proto-Germanic *næthlo (cognates: Old Saxon nathla, Old Norse nal, Old Frisian nedle, Old High German nadala, German Nadel, Gothic neþla "needle"), literally "a tool for sewing," from PIE *net-la-, from root *(s)ne- "to sew, to spin" (cognates: Sanskrit snayati "wraps up," Greek nein "to spin," Latin nere "to spin," German nähen "to sew," Old Church Slavonic niti "thread," Old Irish snathat "needle," Welsh nyddu "to sew," nodwydd "needle") + instrumental suffix *-tla.
To seke out one lyne in all hys bookes wer to go looke a nedle in a meadow. [Thomas More, c. 1530]
Meaning "piece of magnetized steel in a compass" is from late 14c. (on a dial or indicator from 1928); the surgical instrument so called from 1727; phonographic sense from 1902; sense of "leaf of a fir or pine tree" first attested 1797. Needledom "the world of sewing" is from 1847. Needle's eye, figurative of a minute opening, often is a reference to Matt. xix:24.
venal (adj.)youdaoicibaDictYouDict
1650s, "capable of being obtained for a price; that can be corrupted;" 1660s, "offered for sale," from French vénal, Old French venel "for sale" (of prostitutes, etc.; 12c.), from Latin venalis "for sale, to be sold; capable of being bribed," from venum (nominative *venus) "for sale," from PIE root *wes- (1) "to buy, sell" (cognates: Sanskrit vasnah "purchase money," vasnam "reward," vasnayati "he bargains, haggles;" Greek onos "price paid, purchase," oneisthai "to buy"). Typically with a bad sense of "ready to sell one's services or influence for money and from sordid motives; to be bought basely or meanly."
TheravadayoudaoicibaDictYouDict
"The more conservative of the two major traditions of Buddhism (the other being Mahayana), which developed from Hinayana Buddhism. It is practised mainly in Sri Lanka, Burma (Myanmar), Thailand, Cambodia, and Laos", From Pali theravāda, literally 'doctrine of the elders', from thera 'elder, old' + vāda 'speech, doctrine'.