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rattle [rattle 词源字典]: rattle: [14] Rattle probably existed in Old English, but in the absence of any direct evidence, it is usually suggested that the word was borrowed from Middle Low German rattelen, a relative of German rasseln ‘rattle’. Whatever its ultimate source, it no doubt originally imitated the sound of rattling.
[rattle etymology, rattle origin, 英语词源]
babble (v.): mid-13c., babeln "to prattle, chatter," akin to other Western European words for stammering and prattling (cognates: Swedish babbla, Old French babillier) attested from the same era, some of which probably were borrowed from others, but etymologists cannot now determine which were original. Probably imitative of baby-talk, in any case (compare Latin babulus "babbler," Greek barbaros "non-Greek-speaking"). "No direct connexion with Babel can be traced; though association with that may have affected the senses" [OED]. Meaning "to repeat oneself incoherently, speak foolishly" is attested from c. 1400. Related: Babbled; babbler; babbling; babblement.
crepitus (n.): c. 1810, from Latin crepitus "a rattling, creaking;" another word for crepitation, which is from the same root.
prattle (v.): 1530s, frequentative of prate (q.v.). Related: Prattled; prattling. The noun is attested from 1550s.
rattle (v.): c. 1300 (intransitive), "To make a quick sharp noise with frequent repetitions and collisions of bodies not very sonorous: when bodies are sonorous, it is called jingling" [Johnson]. Perhaps in Old English but not recorded; if not, from Middle Dutch ratelen, probably of imitative origin (compare German rasseln "to rattle," Greek kradao "I rattle"). Sense of "utter smartly and rapidly" is late 14c. Meaning "to go along loosely and noisily" is from 1550s. Transitive sense is late 14c.; figurative sense of "fluster" is first recorded 1869. Related: Rattled; rattling.
rattletrap: 1766, originally a noun, "knick-knacks, trifles, odds and ends," from rattle (adj.) + trap, perhaps in the sense in traps (n.2). Hence, "a shabby, rattling object," especially a rickety coach or other vehicle (1822). The adjectival sense of "rickety" is recorded from 1834.
saber (n.): type of single-edged sword, 1670s, from French sabre "heavy, curved sword" (17c.), alteration of sable (1630s), from German Sabel, Säbel, probably ultimately from Hungarian szablya "saber," literally "tool to cut with," from szabni "to cut."

The Balto-Slavic words (Russian sablya, Polish szabla "sword, saber," Lithuanian shoble) perhaps also are from German. Italian sciabla seems to be directly from Hungarian. Saber-rattling "militarism" is attested from 1922. Saber-toothed cat (originally tiger) is attested from 1849.
rale: "An abnormal rattling sound heard when examining unhealthy lungs with a stethoscope", Early 19th century: from French râle, from râler 'to rattle'.