In the United States, a cent, Money in general_ as, it cost a pretty penny (a good round sum); to turn an honest penny, a coin worth one-hundredth of the value of the basic unit, verb_ slang To jam a door shut by inserting pennies between the doorframe and the door, electronics To circumvent the tripping of an electrical circuit breaker by the dangerous practice of inserting a coin in place of a fuse in a fuse socket, adjective_ Denoting the weight in pounds for one thousand; -- used in combination, with respect to nails, Worth or costing one penny