Noun
The unit of weight in the metric system. It was intended to be exactly, and is very nearly, equivalent to the weight in a vacuum of one cubic centimeter of pure water at its maximum density. It is equal to 15.432 grains. See Grain, n., 4.
Same as Gram the weight.
Source: Webster's dictionaryAnd do remember that a gramme is better than a damn. Aldous Huxley