1A ball — a round object used as a toy or in sports, such as a soccer ball or baseball.
子供たちが公園でボール遊びをしている。
The children are playing ball games in the park.
サッカーボールを蹴ってゴールを決めた。
He kicked the soccer ball and scored a goal.
弟にボールの投げ方を教えた。
I taught my little brother how to throw a ball.
2In baseball, a pitch judged to be outside the strike zone (as opposed to a strike); four balls award the batter a walk to first base.
そのピッチはボールと判定され、カウントが増えた。
That pitch was called a ball and the count increased.
投手が続けてボールを投げ、打者を歩かせてしまった。
The pitcher threw ball after ball and ended up walking the batter.