coiled; coiling; coils
1
: to wind into rings or spirals
coil a rope
2
: to roll or twist into a shape resembling a coil
coiled herself up on the couch
plural coils
1
a(1)
: a series of loops
(2)
: spiral
b
: a single loop of such a coil
2
a
: a number of turns of wire wound around a core (as of iron) to create a magnetic field for an electromagnet or an induction coil
b
3
: a series of connected pipes in rows, layers, or windings
4
: a roll of postage stamps
also
: a stamp from such a roll
5
medical
: intrauterine device
That means no condoms, no pills, no coils or sterilization …—Christine M. Flowers
The IUD or 'coil' is a small plastic (or plastic and copper) device, not much longer than a match, which is placed inside your womb, where it prevents you from getting pregnant. It's often called a 'coil' because most of the original IUDs were coil-shaped.—David Delvin
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Merriam-Webster unabridged
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