Definition of "Pocket" :

noun: a small pouch inside a garment for carrying small articles

noun: an opening at the corner or on the side of a billiard table into which billiard balls are struck

noun: (anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)

noun: a small isolated group of people

"They were concentrated in pockets inside the city."

noun: a local region of low pressure or descending air that causes a plane to lose height suddenly

noun: a supply of money

"They dipped into the taxpayers' pockets."

noun: a hollow concave shape made by removing something

noun: (bowling) the space between the headpin and the pins behind it on the right or left

"The ball hit the pocket and gave him a perfect strike."

noun: an enclosed space

"The trapped miners found a pocket of air."

verb: put in one's pocket

"He pocketed the change."

verb: take unlawfully