Definition of curveball
: a slow or moderately fast baseball pitch thrown with spin to make it swerve downward and usually to the left when thrown from the right hand or to the right when thrown from the left hand
Examples of curveball in a sentence
The batter struck out on a curveball.
First Known Use of curveball
CURVEBALL Defined for English Language Learners
Definition of curveball for English Language Learners
baseball : a pitch that is thrown with spin so that the ball curves in the air
Learn More about curveball
Seen and Heard
What made you want to look up curveball? Please tell us where you read or heard it (including the quote, if possible).