switchblade的词源

英文词源

switchblade (n.)

also switch-blade, type of folding pocket knife, 1932, from switch (n.) + blade. So called for the "switch" which is pressed to spring the knife open. Earlier a similar tool was known as an Arkansas toothpick (1837) and a clasp-knife (1755).

中文词源

switchblade：弹簧刀

switch,转换，blade,刀片。

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