from
The Collaborative International Dictionary of English v.0.48
Roil \Roil\, v. t. [imp. & p. p. {Roiled}; p. pr. & vb. n.
{Roiling}.] [Cf. OE. roilen to wander; possibly fr. OF.
roeler to roll, equiv. to F. rouler. See {Roll}, v., and cf.
{Rile}.]
1. To render turbid by stirring up the dregs or sediment of;
as, to roil wine, cider, etc., in casks or bottles; to
roil a spring.
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2. To disturb, as the temper; to ruffle the temper of; to
rouse the passion of resentment in; to perplex.
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That his friends should believe it, was what roiled
him [Judge Jeffreys] exceedingly. --R. North.
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Note: Provincial in England and colloquial in the United
States. A commoner, but less approved, form is rile.
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