Slang A left-handed person, especially a left-handed baseball pitcher. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "southpaw" in a sentence
"I have the CDL in southpaw and use it for just about everything."
"Macha brought in southpaw Ricardo Rincon (1-1), whose first offering was belted off the right field wall by Darin Erstad, plating two and tying the game, 4-4."
"Who's the most dangerous when a southpaw is on the mound?"