cogwheel的词源

英文词源

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foreign: foreign: [13] Etymologically, foreign means ‘out of doors’. It comes via Old French forein from Vulgar Latin *forānus, a derivative of Latin forās ‘out of doors, abroad’. This originated as the accusative plural of *fora, an unrecorded variant form of forēs ‘door’ (to which English door is related). The literal sense ‘outdoor’ survived into Middle English (the chambre forene mentioned by Robert of Gloucester in his Chronicle 1297, for instance, was an ‘outside loo’), but by the early 15th century the metaphorical ‘of other countries, abroad’ had more or less elbowed it aside.
=> door, forest, forfeit

来自cog和wheel的合成词。

该词的英语词源请访问趣词词源英文版：cogwheel 词源，cogwheel 含义。