burn the midnight oil

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burn the midnight oil

To stay up late working on a project or task. The phrase refers to the outdated practice of using an oil lamp. Denise has been burning the midnight oil trying to finish this report, so she must be exhausted. I'll need to burn the midnight oil to have any chance of finishing this paper before class tomorrow morning.
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burn the midnight oil

Fig. to stay up working, especially studying, late at night. (Alludes to working by the light of an oil lamp late in the night.) I have a big exam tomorrow so I'll be burning the midnight oil tonight. If you burn the midnight oil night after night, you'll probably become ill.
See also: burn, midnight, oil

burn the midnight oil

to work very late into the night I've got to get this report finished by tomorrow so I guess I'll be burning the midnight oil tonight.
See also: burn, midnight, oil

burn the midnight oil

Stay up late working or studying, as in The semester is almost over and we're all burning the midnight oil before exams. This expression alludes to the oil in oil lamps. [Early 1600s]
See also: burn, midnight, oil

burn the midnight oil

To work or study very late at night.
See also: burn, midnight, oil