The Collaborative International Dictionary
Seltzer water \Selt"zer wa"ter\ See Selters water.
Wiktionary
n. A beverage made of plain soda water, often for use in mixing with alcohol, cordials, and juices
Usage examples of "seltzer water".
They tried cajoling, they tried threatening, they tried rational argument, they tried inductive logic, they tried deductive logic, they tried salary incentives, they tried profit sharing, they tried tickling his risibilities, they tried tickling his feet, they tried punching him, they tried shocking him, they tried arresting him, they tried crowbars, they tried hosing him down with cold water, then hot water, then seltzer water, they tried suction devices, they tried sensory deprivation, they tried doping him into unconsciousness.
Reggie gave himself a small cigar and a glass of seltzer water before he thought of coming back.
Sergeant Ferris swore this light was big as a locomotive and it came rolling and bouncing down the road, went right over the truck like seltzer water bouncing in a soda glass.