難なん球きゅうなんきゅうMeanings1noundifficult ball; tough pitchbaseballBaseball term for a pitch that is hard to hit or a batted ball that is hard to catch.彼かれは難なん球きゅうをうまく打うち返かえした。He managed to hit the difficult pitch well.外がい野や手しゅが難なん球きゅうを好こう捕ほした。The outfielder made a great catch on the tough ball.