1. Another name for baking soda. 2. A generic term for any flavored soft drink. 3. Any of many soda waters. 4. A concoction of one or more scoops of ice cream topped with a flavored soft drink or soda water and flavored syrup.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.