Cheek

1. The cheek bone.
2. To be impudent or saucy to.
3. A section of a flask, so made that it can be moved laterally, to permit the removal of the pattern from the mold; the middle part of a flask.
4. The side of the face below the eye.
5. The branches of a bridle bit.
6. Those pieces of a machine, or of any timber, or stone work, which form corresponding sides, or which are similar and in pair; as, the cheeks (jaws) of a vise; the cheeks of a gun carriage, etc.
7. Cool confidence; assurance; impudence.