1. [noun] (uncountable) Sodium bicarbonate.
2. [noun] (uncountable) Sodium in chemical combination.
3. [noun] (uncountable) Carbonated water (originally made with sodium bicarbonate).
4. [noun] (chiefly US) (regional) (especially in the northeast) (uncountable) Any carbonated (usually sweet) soft drink.
5. [noun] (chiefly US) (regional) (especially in the northeast) (countable) A glass, bottle or can of this drink.
6. [noun] A sodium salt of carbonic acid; used in making soap powders and glass and paper.
7. [noun] A sweet drink containing carbonated water and flavoring; 'in New England they call sodas tonics'.
