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chime [chime 词源字典]: chime: [13] Etymologically, chime is the same word as cymbal – indeed it originally meant ‘cymbal’ in English – but the route by which it reached English is not altogether clear. Latin cymbalum was borrowed into Old French as chimbe, which is perhaps the most likely source of the English word, whose earliest forms include chimbe. However, Old English also acquired the Latin word, as cimbal, and it has been speculated that this may have survived into the Middle English period as *chimbel, whose last syllable was misinterpreted as bell.

This would have opened the way to a misanalysis of the word as chime bell, a term which does actually occur from the 13th to the 15th centuries. This theory has the advantage of explaining the transference of the word’s meaning from ‘cymbals’ to ‘bells’, which occurred between the 14th and 15th centuries.
=> cymbal[chime etymology, chime origin, 英语词源]
traps (n.2): "drums, cymbals, bells, etc.," 1925, from earlier trap drummer (1903) "street musician who plays a drum and several other instruments at once," perhaps from traps "belongings" (1813), shortened form of trappings.