クリーンアップ LinksSentence search for クリーンアップSentence search for クリーンナップEdit in JMdict Noun1. heart of the batting order (3rd, 4th and 5th batters); 3-4-5 hittersBaseball, Abbreviation, See also クリーンアップトリオNoun2. cleanup; cleaning upOther formsクリーンナップ Discussions Log in to talk about this word.