Simple Definition of second base
baseball : the base that must be touched second by a base runner; also : the position of the player who defends the area near second base
Full Definition of second base
1 : the base that must be touched second by a base runner in baseball
2 : the player position for defending the area on the first-base side of second base
Examples of second base in a sentence
He slid into second base.
He used to play second base for the Red Sox.
First Known Use of second base
Seen and Heard
What made you want to look up second base? Please tell us where you read or heard it (including the quote, if possible).