burn the midnight oil
/ˌbɜːrn ðə ˌmɪdnaɪt ˈɔɪl/
to work late into the night
“She burned the midnight oil to finish the proposal.”
Origin: From era before electricity when oil lamps were burned late at night for light
/ˌbɜːrn ðə ˌmɪdnaɪt ˈɔɪl/
to work late into the night
“She burned the midnight oil to finish the proposal.”
Origin: From era before electricity when oil lamps were burned late at night for light