1. The base that must be touched second by a base runner in baseball
   "The player slid safely into second base"
    
2. The fielding position of the player on a baseball team who is stationed near the second of the bases in the infield
   "She excelled at turning double plays from second base";
   - second
    
3. [US, informal] Sexual touching of a woman's breast
   "They made it to second base on their third date"

Derived forms: second bases

Type of: bag, base, position

Part of: baseball team

Encyclopedia: Second base