either side of the face below the eye and above the jaw.
the side wall of the mouth between the upper and lower jaws.
something resembling the side of the human face in form or position, as either of two parts forming corresponding sides of various objects: the cheeks of a vise.
impudence or effrontery: He's got a lot of cheek to say that to me!
Slang. either of the buttocks.
one side of an opening, as a reveal.
either of two similar faces of a projection, as a buttress or dormer.
a piece of wood removed from the end of a timber in making a tenon.
a piece of wood on either side of a mortise.
one side of a hammer head.
Horology. one of two pieces placed on both sides of the suspension spring of a pendulum to control the amplitude of oscillation or to give the arc of the pendulum a cycloidal form.
one of the two main vertical supports forming the frame of a hand printing press.
Machinery. either of the sides of a pulley or block.
Nautical. either of a pair of fore-and-aft members at the lower end of the head of a lower mast, used to support trestletrees which in turn support a top and often the heel of a topmast; one of the hounds of a lower mast.
Metallurgy. any part of a flask between the cope and the drag.
cheek by jowl, in close intimacy; side by side: a row of houses cheek by jowl.
(with) tongue in cheek. tongue ( def 37 ).

before 900; Middle English cheke, Old English (a)ce; akin to Dutch kaak, Middle Low German kake

cheekless, adjective

4. nerve, audacity, brass, gall. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cheek (tʃiːk)
1.  a.  either side of the face, esp that part below the eye
 b.  either side of the oral cavity; side of the mouthRelated: buccal, genal, malar
2.  informal impudence; effrontery
3.  informal (often plural) either side of the buttocks
4.  (often plural) a side of a door jamb
5.  nautical one of the two fore-and-aft supports for the trestletrees on a mast of a sailing vessel, forming part of the hounds
6.  one of the jaws of a vice
7.  cheek by jowl close together; intimately linked
8.  turn the other cheek to be submissive and refuse to retaliate even when provoked or treated badly
9.  with one's tongue in one's cheek See tongue
10.  informal (tr) to speak or behave disrespectfully to; act impudently towards
Related: buccal, genal, malar
[Old English ceace; related to Middle Low German kāke, Dutch kaak]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. ceace, cece "jaw, jawbone," also "the fleshy wall of the mouth," from W.Gmc. *kaukon, not found outside W.Gmc. Sense of "insolence" is from 1840. Cheeks "the buttocks" is from c.1600. To turn the other cheek is an allusion to Matt. v.39 and Luke vi.29.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

cheek (chēk)

  1. The fleshy part of either side of the face below the eye and between the nose and ear.

  2. Either of the buttocks.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Bible Dictionary

Cheek definition

Smiting on the cheek was accounted a grievous injury and insult (Job 16:10; Lam. 3:30; Micah 5:1). The admonition (Luke 6:29), "Unto him that smiteth thee on the one cheek offer also the other," means simply, "Resist not evil" (Matt. 5:39; 1 Pet. 2:19-23). Ps. 3:7 = that God had deprived his enemies of the power of doing him injury.

Easton's 1897 Bible Dictionary
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American Heritage
Idioms & Phrases


In addition to the idiom beginning with cheek, also see tongue in cheek; turn the other cheek.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
He then did the same thing on her other cheek and likewise ran four threads on
  either side of her neck.
It even had the cheek to propose increasing its dividend.
The doctors placed her into a brain scanner, and asked her to scratch her cheek
  with her phantom limb.
From behind her, a beefy brute with a scar on his cheek clamps a meaty hand
  over her mouth.
Images for cheek
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