颊囊

[ noun ]
a membranous pouch inside the mouth of many rodents (as a gopher)
<noun.body>

Cheek \Cheek\ (ch[=e]k), n. [OE. cheke, cheoke, AS. ce[`a]ce,
ce[`o]ce; cf. Goth. kukjan to kiss, D. kaak cheek; perh. akin
to E. chew, jaw.]
1. The side of the face below the eye.

2. The cheek bone. [Obs.] --Caucer.

3. pl. (Mech.) 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.

4. pl. The branches of a bridle bit. --Knight.

5. (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. Cool confidence; assurance; impudence. [Slang]

{Cheek of beef}. See Illust. of {Beef}.

{Cheek bone} (Anat.) the bone of the side of the face; esp.,
the malar bone.

{Cheek by jowl}, side by side; very intimate.

{Cheek pouch} (Zo["o]l.), a sacklike dilation of the cheeks
of certain monkeys and rodents, used for holding food.

{Cheeks of a block}, the two sides of the shell of a tackle
block.

{Cheeks of a mast}, the projection on each side of a mast,
upon which the trestletrees rest.

{Cheek tooth} (Anat.), a hinder or molar tooth.

{Butment cheek}. See under {Butment}.