pickgrand slam . grand slam {n.} A home run hit when there are three men on the bases. Tony's grand slam won the game for the Yankees, 4—0. Categories: add yours noun Source: A Dictionary of American Idioms 'grand slam' on video Le grand Slam: Émission du 7 août 2022 Grand Slam Le grand Slam: Émission du 17 juillet 2022 Le grand Slam: Émission du 24 juillet 2022 sort: relevance, mode: exact match, q: "grand slam", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss