noun, plural eddies.
a current at variance with the main current in a stream of liquid or gas, especially one having a rotary or whirling motion.
a small whirlpool.
any similar current, as of air, dust, or fog.
a current or trend, as of opinion or events, running counter to the main current.
verb (used with object), verb (used without object), eddied, eddying.
to move or whirl in eddies.

1425–75; late Middle English; Old English ed- turning + ēa water; akin to Old Norse itha

uneddied, adjective
uneddying, adjective
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Mary (Morse) Baker (Mrs. Glover; Mrs. Patterson) 1821–1910, U.S. founder of the Christian Science Church.
Also, Eddie. a male given name, form of Edgar or Edward.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
eddy (ˈɛdɪ)
n , pl -dies
1.  a movement in a stream of air, water, or other fluid in which the current doubles back on itself causing a miniature whirlwind or whirlpool
2.  a deviation from or disturbance in the main trend of thought, life, etc, esp one that is relatively unimportant
vb , -dies, -dies, -dying, -died
3.  to move or cause to move against the main current
[C15: probably of Scandinavian origin; compare Old Norse itha; related to Old English ed- again, back, Old High German it-]

Eddy (ˈɛdɪ)
Mary Baker. 1821--1910, US religious leader; founder of the Christian Science movement (1866)

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

mid-15c., Scot. ydy, possibly from O.N. iða "whirlpool," and related to the frequent O.E. prefix ed- "again, backwards," cognate of L. re-. Related: Eddied; eddies; eddying.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
eddy   (ěd'ē)  Pronunciation Key 
A current, as of water or air, moving in a direction that is different from that of the main current. Eddies generally involve circular motion; unstable patterns of eddies are often called turbulence. See also vortex.
The American Heritage® Science Dictionary
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