Definition of "knuckler" []

• Baseball A knuckle ball. (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.

• "The knuckler is his one payoff pitch; his only weapon against the hitter."
• "“But the knuckler is a good waste pitch and if it comes close to the plate, the batter usually goes for it, and even if he hits it, he has a hard time getting a very good piece of it.”"
• "One manifestation of this gut-level dislike of the knuckler was the argument that a pitcher shouldn’t throw the knuckleball as a part of a mixed repertoire; instead, the pitch should be left to specialists."