To render larger, more extended, or more intense.
To add content that is not present in the source text to the target text, usually to improve the fluency of the translation.
To increase the amplitude of something, especially of an electric current.
To enlarge by addition or commenting; to treat copiously by adding particulars, illustrations, etc.; to expand.
To double, especially to double again; to increase considerably; to multiply; to intensify.
To become twice as big.
To double an opponent's doubling bid.
To double again what was reduced to a single state.
An optional bid made by the side currently holding the highest bid for the contract, after the opposing side has doubled.