[cheek] 
| 1. | either side of the face below the eye and above the jaw. |
| 2. | the side wall of the mouth between the upper and lower jaws. |
| 3. | 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. |
| 4. | impudence or effrontery: He's got a lot of cheek to say that to me! |
| 5. | Slang. either of the buttocks. |
| 6. | Architecture.
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| 7. | Carpentry.
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| 8. | one side of a hammer head. |
| 9. | 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. |
| 10. | one of the two main vertical supports forming the frame of a hand printing press. |
| 11. | Machinery. either of the sides of a pulley or block. |
| 12. | 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. |
| 13. | Metallurgy. any part of a flask between the cope and the drag. |
| 14. | cheek by jowl, in close intimacy; side by side: a row of houses cheek by jowl. |
| 15. | (with) tongue in cheek. tongue (def. 37). |
| cheek (chēk) n.
To speak impudently to. [Middle English cheke, from Old English cēace.] |
Situated side by side or in close contact: “The commuters were packed in the subway cheek by jowl.”
cheek (chēk)
n.
The fleshy part of either side of the face below the eye and between the nose and ear.
Either of the buttocks.
cheek by jowl
Side by side, close together, as in In that crowded subway car we stood cheek by jowl, virtually holding one another up. This term dates from the 16th century, when it replaced cheek by cheek.