Noun
big oil (uncountable)
(business, derogatory) The world's largest oil and gas companies (supermajors), understood as a business group having significant political, economic, or social power.
Big Oil (uncountable)
Alternative letter-case form of big oil
Big Oil is the biggest and most powerful corporate lobby in Sacramento — and the Western States Petroleum Association (WSPA) is the biggest and most powerful lobbying organization. Source: Internet
Why on earth would they care about the intangible future when Big Oil is offering to line their pockets right now for a few policy rollbacks? Source: Internet