From Longman Dictionary of Contemporary Englishgushergush‧er /ˈɡʌʃə $ -ər/ noun [countable] TPGa place in the ground where oil or water comes out very forcefully, so that a pump is not needed
Examples from the Corpus
gusher• The Dallas Cowboys are owned by Jerry Jones, an oilman with an ego that would dwarf a gusher.• And while the price of oil looked like a gusher, consumer and business confidence fell down the well.• Richard was like a gusher of newly tapped oil spraying about in all directions.• In March 1991 -- almost four years after the consortium was formed -- they struck a gusher in the Cusiana field.• Mason's gusher was not a big hit in Bondgate either.• There were heady times, beginning in 1994, when Ultimate Fighting brought in a flow of cash like a Texas gusher.• But at the time that complex structure was established, few anticipated the gusher of money about to erupt. 