Definitions:

1. A dessert beverage made by combining scoops of ice cream with a carbonated soft drink or soda, creating a fizzy, creamy treat. NOUN
   • She ordered a root beer ice-cream float with extra foam.
2. A dessert or beverage that typically consistes of one or more scoops of ice cream in a soft drink or in a mixture of flavored syrup and carbonated water, NOUN
   • The combination of vanilla ice cream and Coca-Cola made a refreshing ice-cream float.

Synonyms:

• float
• soda float