Heater definition by Slang.net
This page explains what the slang term "Heater" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
We are constantly updating our database with new slang terms, acronyms, and abbreviations. If you would like to suggest a term or an update to an existing one, please let us know!
A term that refers to an impressive fastball thrown by a baseball or softball pitcher; often reaches over 100mph; fearsome heater-throwing pitchers include Randy Johnson, Aroldis Chapman, Joel Zumaya, and Nolan Ryan.