| 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.
|
| 7. | Carpentry.
|
| 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.
The fleshy part of either side of the face below the eye and between the nose and ear.
Either of the buttocks.