pocket

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A small baglike attachment forming part of a garment and used to carry small articles, as a flat pouch sewn inside a pair of pants or a piece of material sewn on its sides and bottom to the outside of a shirt.
• noun A small sack or bag.
• noun A receptacle, cavity, or opening.
• noun Financial means; money supply.
• noun A small cavity in the earth, especially one containing ore.
• noun A small body or accumulation of ore.
• noun A pouch in an animal body, such as the cheek pouch of a rodent or the abdominal pouch of a marsupial.
• noun Games One of the pouchlike receptacles at the corners and sides of a billiard or pool table.
• noun Sports The webbing attached to the head of a lacrosse stick, in which the ball is caught and held.
• noun Baseball The deepest part of a baseball glove, just below the web, where the ball is normally caught.
• noun Sports A racing position in which a contestant has no room to pass a group of contestants immediately to his or her front or side.
• noun A small, isolated, or protected area or group.
• noun Football The area a few yards behind the line of scrimmage that blockers attempt to keep clear so that the quarterback can pass the ball.
• noun An air pocket.
• noun A bin for storing ore, grain, or other materials.
• adjective Suitable for or capable of being carried in one's pocket.
• adjective Small; miniature.
• adjective Designating the two cards that are dealt to a player face down in Texas hold'em.
• transitive verb To place in a pocket.
• transitive verb To take possession of for oneself, especially dishonestly.
• transitive verb To accept or tolerate (an insult, for example).
• transitive verb To conceal or suppress.
• transitive verb To prevent (a bill) from becoming law by failing to sign until the adjournment of the legislature.
• transitive verb Sports To hem in (a competitor) in a race.
• transitive verb Games To hit (a ball) into a pocket of a pool or billiard table.
• idiom (in (one's) pocket) In one's power, influence, or possession.
• idiom (in pocket) Having funds.
• idiom (in pocket) Having gained or retained funds of a specified amount.
• idiom (out of pocket) Out of one's own resources.
• idiom (out of pocket) Without funds or assets.
• idiom (out of pocket) In a state of having experienced a loss, especially a financial one.

from The Century Dictionary.

• noun A small cavity in a rock-surface or in the channel of an intermittent stream, sometimes holding a pool of water. Also called a water-pocket.
• noun In Australia: A bar formed by a river at a bend, much curved and hollowed out near its shore end.
• noun A circular, hollowed-out spot in thick scrub.
• noun A small pouch or bag; specifically, a small pouch inserted in a garment for” carrying money or other small articles.
• noun That which is carried in the pocket; money; means; financial resources.
• noun One of the small bags or nets at the corners and sides of some billiard-tables.
• noun Any cavity or opening forming a receptacle: as, a brace-pocket, a post-pocket, etc.
• noun In a window lifted with sashes, the hole for a pulley.
• noun In mining, an irregular cavity filled with veinstone and ore; a swelling of the lode in an irregular manner, in which a more or less isolated mass of ore occurs.
• noun A glen or hollow among mountains.
• noun A certain quantity of hops, wool, etc., equal to about 168 pounds.
• noun In racing slang, a position in a race where one contestant is surrounded by three or more others, so that, owing to the impeding of his advance, he has no chance to win.
• noun In zoology and anatomy: A blind sac; a sac-shaped cavity
• noun The external cheek-pouch of a rodent, as of the Geomyidæ and Saccomyidæ. See cuts under Geomyidæ and Perognathus.
• noun The abdominal pouch of a marsupial
• noun The abdominal cavity of a halibut or other fish.