coil

1 [koil]
verb (used with object)
1.
to wind into continuous, regularly spaced rings one above the other: to coil a wire around a pencil.
2.
to wind on a flat surface into rings one around the other: He coiled the rope on the deck.
3.
to gather (rope, wire, etc.) into loops: She coiled the garden hose and hung it on the hook.
verb (used without object)
4.
to form rings, spirals, etc.; gather or retract in a circular way: The snake coiled, ready to strike.
5.
to move in or follow a winding course: The river coiled through the valley.
noun
6.
a connected series of spirals or rings into which a rope or the like is wound.
7.
a single such ring.
8.
an arrangement of pipes, coiled or in a series, as in a radiator.
9.
a continuous pipe having inlet and outlet, or flow and return ends.
10.
Medicine/Medical. an intrauterine device.
11.
Electricity.
a.
a conductor, as a copper wire, wound up in a spiral or other form.
b.
a device composed essentially of such a conductor.
12.
Philately.
a.
a stamp issued in a roll, usually of 500 stamps, and usually perforated vertically or horizontally only.
b.
a roll of such stamps.

Origin:
1605–15; perhaps variant of cull

coilable, adjective
coilability, noun
uncoiled, adjective
Dictionary.com Unabridged

coil

2 [koil]
noun
1.
a noisy disturbance; commotion; tumult.
2.
trouble; bustle; ado.

Origin:
1560–70; origin uncertain

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
coil1 (kɔɪl)
 
vb
1.  to wind or gather (ropes, hair, etc) into loops or (of rope, hair, etc) to be formed in such loops
2.  (intr) to move in a winding course
 
n
3.  something wound in a connected series of loops
4.  a single loop of such a series
5.  an arrangement of pipes in a spiral or loop, as in a condenser
6.  See also induction coil an electrical conductor wound into the form of a spiral, sometimes with a soft iron core, to provide inductance or a magnetic field
7.  an intrauterine contraceptive device in the shape of a coil
8.  the transformer in a petrol engine that supplies the high voltage to the sparking plugs
 
[C16: from Old French coillir to collect together; see cull]
 
'coiler1
 
n

coil2 (kɔɪl)
 
n
the troubles and activities of the world (in the Shakespearean phrase this mortal coil)
 
[C16: of unknown origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

coil
1611, from M.Fr. coillir "to gather, pick," from L. colligere "to gather together" (see collect). Meaning specialized perhaps in nautical usage.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
COIL
chemical oxygen-iodine laser
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

coil

in an electric circuit, one or more turns, usually roughly circular or cylindrical, of current-carrying wire designed to produce a magnetic field or to provide electrical resistance or inductance; in the latter case, a coil is also called a choke coil (see also inductance). A soft iron core placed within a coil produces an electromagnet. A cylindrical coil that moves a plunger within it by variations in the current through the coil is known as a solenoid (q.v.).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
He said the heat had melted the bucket, causing the hot coil to fall against
  the wooden side of a horse stall.
Such machines use a bank of capacitors to discharge a current rapidly through a
  coil.
Finally, a fan blows air through the refrigerant coil and into the ducts of the
  house.
He straps on a pair of steel spurs and hefts a coil of thick rope.
Images for coil
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