laborious or extra effort, as in studying late at night (cf. oil, n.1 4); usually in to burn (etc.) the midnight oil: to sit up or work (as by…
| 单词 | θ180688 |
| 释义 | society > education > learning > study > [noun] > laborious study (4) midnight oil1635 laborious or extra effort, as in studying late at night (cf. oil, n.1 4); usually in to burn (etc.) the midnight oil: to sit up or work (as by… oil1675 Oil used in a lamp for (esp. nocturnal) study; (hence, allusively) laborious study. Now only in midnight oil n. at midnight, n. adj.compounds 2. Subcategories:— at night (2) |
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