midnight oil
Noun
Meaning
midnight oil (uncountable)
(slang) The drug opium.
Synonyms: see Thesaurus:opium
Related terms
Examples
Only Midnight Oil, who travelled deep into Australia's outback prior to 1987's album, are savvy enough to take this opportunity.
This had been recorded at a show at Sydney's Regent Theatre in 1977 that had featured Midnight Oil as one of the support acts.