From Longman Dictionary of Contemporary Englishgrounderground‧er /ˈɡraʊndə $ -ər/ noun [countable] DSBa ball that is hit along the ground in a game of baseball
Examples from the Corpus
grounder• Then a pop fly, a grounder and a ball.• I throw him four grounders, which he fields cleanly.• Can he afford an infield grounder from the scrappy player, which could lead to a double play?• Jeffrey Hammonds followed with what could have been a double-play grounder.• He got Jones to hit a scary grounder through the box that rookie second baseman Craig Counsell gloved.• Omar Vizquel was next, and he hit a sharp grounder to the right of second base.• The defense lapsed in the sixth, when shortstop Craig Shipley muffed a spinning grounder. 