Topic summary
Batting practice

Extracted from the Wikipedia article Glossary of baseball terms.
diamondThe layout of the four bases in the infield. It's actually a square 90 feet (27 m) on each side, but from the stands it resembles a parallelogram or "diamond".dieA fly ball is said to die if it travels a shorter distance from home plate than initially expected due to wind or other aerodynamic factors. Not to be confused with dead ball.dig it outTo field a ball on or near the ground. Usually a first baseman taking a low throw from another infielder. To "dig it out of the dirt".To run hard through first base on a close ground ball play in an attempt to beat the throw.dinged (up)Injured; often used in reference to persistent minor injuries.dingerA home run.dirt-napTo trip or fall in the outfield or on the base paths. A blown save may also be referred to as a dirt-nap.disabled listA means by which Major League teams may temporarily remove injured players from their active roster. Another player can then be called up as a replacement during this time. The term "disabled list" was replaced by "injured list" prior to the 2019 MLB season.dishThe Hitter (Batter) stands off the dish [Home Plate].Home plate. "The catcher settles in behind the dish."A pitch, particularly a good one. "He