- a player who throws with the left hand, especially a pitcher.
- Boxing. a boxer who leads with the right hand and stands with the right foot forward, using the left hand for the most powerful blows.
Examples from the Web for southpaw
The four-part story of Henry Wiggen begins with The Southpaw, which was published a year after The Natural.The 13 Best Baseball Books: From ‘The Art of Fielding’ to ‘Moneyball’|Jimmy So|April 5, 2012|DAILY BEAST
Like a flash the southpaw whirled about and shot the ball to second, knowing some one would be there to take the throw.
There had been a time when Morse could scare the Camden players with his speed and fool them with his "southpaw" delivery.Frank Merriwell's Cruise|Burt L. Standish
All three of the thugs would be at the southpaw again in another jiffy.
The southpaw fought to prevent his lips from curling with scorn, and to suppress a look of triumph in his eyes.
The enemy over in Southpaw had already advanced the prophecy that they would take the meeting-house.The Red Debt|Everett MacDonald