英语词汇not to know one-s ass from one-s elbow的起源、历史背景-英语词源词典

词汇	not to know one-s ass from one-s elbow
词源	not to know one’s ass from one’s elbow. An American phrase probably dating back to the late 1890s and meaning to be abys- mally stupid or ignorant. Not to know one’s ears from one’s el- bows is a euphemism that Partridge traces to England, about 1940. Another common synonym is not to know one’s ass from a hole in the ground.
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英语词源词典收录了13259条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。