cheek

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The fleshy part of either side of the face below the eye and between the nose and ear.
2. n. Something resembling the cheek in shape or position.
3. n. Either of the buttocks.
4. n. Impertinent boldness: had the cheek to insult his hosts.
5. v. Informal To speak impudently to.
6. idiom. cheek by jowl Side by side; close together.

Century Dictionary and Cyclopedia

1. n. Either of the two sides of the face below the eyes.
2. n. Something regarded as resembling the human cheek in form or position; one of two pieces, as of an instrument, apparatus, framework, etc., which form corresponding sides or which are double and alike. specifically— In founding, one of the side-parts of a flask consisting of more than two parts.
3. n. The miter-sill of a lock-gate. Naut., one of the pieces of a block which form the sides of the shell.
4. n. A cheek-bone; a jaw-bone.
5. n. In entomology, the gena, or that part of an insect's head which lies between the eye and the mouth-cavity. This region sometimes becomes very prominent, as in certain of the Diptera.
6. n. The edible portion of the large seaclam, Mactra solidissima.
7. n. Cool confidence; brazen-faced impudence; an impudent or self-confident manner: as, he has plenty of cheek.
8. n. Share; portion; allowance.
9. To bring up to the cheek.
10. To face; confront in a bold or impudent manner; assail with impudent or insulting language.

Wiktionary

1. n. anatomy The soft skin on each side of the face, below the eyes; the outer surface of the sides of the oral cavity.
2. n. informal, usually in the plural A buttock.
3. n. informal Impudence.
4. n. biology, informal One of the genae, flat areas on the sides of a trilobite's cephalon.
5. v. To be impudent towards.

GNU Webster's 1913

1. n. The side of the face below the eye.
2. n. obsolete The cheek bone.
3. n. (Mech.) Those pieces of a machine, or of any timber, or stone work, which form corresponding sides, or which are similar and in pair
4. n. The branches of a bridle bit.
5. n. (Founding) 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.
6. n. Slang Cool confidence; assurance; impudence.
7. v. Slang. To be impudent or saucy to.

WordNet 3.0

1. n. either of the two large fleshy masses of muscular tissue that form the human rump
2. n. impudent aggressiveness
3. n. either side of the face below the eyes
4. n. an impudent statement
5. v. speak impudently to