内ない曲きょっ球きゅうMeanings1nounincurve; incurve ballBaseball term for a pitch that curves in toward the batter. The English loanword インカーブ is more common in modern Japanese.彼かれの内ない曲きょっ球きゅうは打うちにくい。His incurve is hard to hit.内ない曲きょっ球きゅうを投なげる練れん習しゅうをした。I practiced throwing an incurve.