My stomach churns within six hours of not having a spliff.
On the story goes, in came milking machines, smaller milk churns.
Anything that churns out harmful smoke, toxins, chemicals, or biological substances into the air is considered a pollutant.
In 1894, at Cambridge, the awards were for fixed and portable oil engines, potato-spraying and tree-spraying machines, sheep-dipping apparatus and churns.
They were used to carry virtually anything, from milk in churns to circus elephants.