ratchet的词源

英文词源

ratchet: ratchet: [17] Ratchet was originally acquired, in the form rochet, from French rochet. This was a diminutive form descended ultimately from Frankish *rokko ‘spool’, which is related to English rocket. The notion of having teeth, which is central to the idea of a ratchet, therefore appears to be historically secondary; it presumably arose from the addition of ‘teeth’ to a rotating ‘spool’ or ‘spindle’ in a machine. The change from rochet to ratchet, which began in the 18th century, may have been influenced by German ratsch ‘ratchet’.
=> rocket
ratchet (v.): 1852, from ratchet (n.). Transferred sense attested by 1977. Related: Ratcheted; ratcheting.
ratchet (n.): 1650s, rochet, from French rochet "bobbin, spindle," from Italian rocchetto "spool, ratchet," diminutive of rocca "distaff," possibly from a Germanic source (compare Old High German rocko "distaff," Old Norse rokkr), from Proto-Germanic *rukka-, from PIE root *ruk- "fabric, spun yarn." Compare rocket (n.2). Current spelling in English dates from 1721, influenced by synonymous ratch, which perhaps is borrowed from German Rätsche "ratchet."

来自法语 rochet,线轴，纺锤，词源同 rock,rocket.引申词义棘轮。插入字母 t,比较 bake,batch.

该词的英语词源请访问找单词词源英文版：ratchet 词源，ratchet 含义。