redouble

redouble is a Verb

Definition:

[1] To double again or repeatedly; to increase by continued or repeated additions; to augment greatly; to multiply. So they Doubly redoubled strokes upon the foe. Shak. n. An optional bid made by the side currently holding the highest bid for the contract, after the opposing side has doubled. This bid increases the score for successfully making the contract, and increases the penalties for failing. The score or penalty depends on the number of tricks over or under the contract, according to a defined schedule, and depending on the vulnerability of the side attempting the contract.