Definition of "soda"

soda

/ˈsəʊdə/

noun
countable and uncountable, plural sodas
1. (uncountable) Sodium bicarbonate (usually baking soda).
2. (uncountable) Sodium carbonate (usually washing soda).
3. (uncountable) Sodium in chemical combination.
4. (uncountable) Carbonated water (water impregnated with pressurised carbon dioxide, originally made with sodium bicarbonate).
  Quotations
  A waiter brought his aperitif, which was a small scotch and soda, and as he sipped it gratefully he sighed. ‘Civilized,’ he said to Mr. Campion. ‘Humanizing.’ […] ‘Cigars and summer days and women in big hats with swansdown face-powder, that's what it reminds me of.’
  1963, Margery Allingham, chapter 5, in The China Governess‎
5. (chiefly US, uncountable) Any carbonated (usually sweet) soft drink.
6. (chiefly US, countable) A glass, bottle or can of this drink.
7. (card games) The first card in the dealing box in the game of faro, which is discarded to leave 51 cards in play.