Hypertext Webster Gateway: "roiling"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
2. To disturb, as the temper; to ruffle the temper of; to
rouse the passion of resentment in; to perplex.
That his friends should believe it, was what roiled
him [Judge Jeffreys] exceedingly. --R. North.
Note: Provincial in England and colloquial in the United
States. A commoner, but less approved, form is rile.
From WordNet (r) 1.7 (wn)
roiling
adj : (of a liquid) agitated vigorously; in a state of turbulence;
"the river's roiling current"; "turbulent rapids" [syn:
{churning}, {roiled}, {roily}, {turbulent}]
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