In baseball, mostly referred as a pitch which "breaks." Those pitches being a curveball, slider, or cutter which all break. Breaking ball is mostly or widely used for a curveball.
"The 3-2 pitch is a breaking ball by Sonny Gray, striking out Robinson Cano, ending the inning."
by Godfatherr May 30, 2016
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Guy: Wanna go to homecoming with me?
Girl: Hell naw
Guy: Why you gotsta break balls?
by John Shelton August 15, 2006
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Breaking balls is a way to say you or someone else is putting maximum effort into something
Dude, I can't, I'm already breaking my balls to get this paper done in time.

This guy's constantly breaking balls.
by CusterdCookie March 22, 2019
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The act of waiting outside a student pub to pick up females of a drunken persuasion,

Derived from the Irish sport of Gaelic Football;
Trev: I pulled some doll at the BOT last night,

John: I thought you were cut down?

Trev: No I got her in the breaking ball

John: Allll Rite!
by Bob Bracheteti May 16, 2008
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when someone is giving you a really hard time.
Hey man, quit breaking my balls.
by fakemonster July 28, 2005
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Annoy; tease; pull a practical joke on. Fr. Italian "rompere i coglioni."
Do you want me to whack you?
Naw, Tony, I was just breaking your balls.
by Octopod November 8, 2003
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An expression used while trying to come to an agreement with someone who is asking too much.
Person 1: I'll give you my watch if you don't ever tell anyone about this.
Person 2: I want the pants too.
Person 1: Oh, you're really breaking my balls here.
by LimeintheCoconut January 7, 2008
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