roil

Definition

To render turbid by stirring up the dregs or sediment of.

Etymology

Origin uncertain. Possibly from French or Middle French rouiller (“to rust, make muddy”), from Old French rouil (“mud, rust”), from Vulgar Latin *robicula, from Latin robigo (“rust, blight”)

Example Sentences

• "to roil wine, cider, etc, in casks or bottles"
• "to roil a spring"
• "dust storms roiling the skies"