soda water

an effervescent beverage consisting of water charged with carbon dioxide.

soda pop.

a weak solution of sodium bicarbonate, taken as a stomachic.

Origin of soda water

First recorded in 1795–1805

He brought out a jar of whisky, a gasogen of soda-water, and some large hard biscuits in their native tin.

Here and Hereafter |Barry Pain
He admitted the insatiable public thirst for soda-water, but saw no reason why Susan should waste herself in catering to it.

The Book of Susan |Lee Wilson Dodd
He had enough to do with the soda-water syphon, which would keep slipping down under his jacket.

Five Children and It |E. Nesbit
Mr. Bobbsey made inquiries of the boatmen and the man who kept the soda-water stand, but none of them had seen the children's pet.

The Bobbsey Twins on Blueberry Island |Laura Lee Hope

You see, the day we went through the hospital, it was hot, and we went to Henderson's for soda-water.

K |Mary Roberts Rinehart

soda water

an effervescent beverage made by charging water with carbon dioxide under pressure Sometimes shortened to: soda