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on the ball

Definition of on the ball

informal

  1. :  mentally prepared :  ready to do what is needed or wanted <With so many intelligent students, the teacher must always be on the ball.>



Word by Word Definitions

ballplay
  1. : :  a round or roundish body or mass: as

    :  a spherical or ovoid body used in a game or sport

    :  earth, globe

  1. :  to form or gather into a ball

    :  to form or gather into a ball

  1. :  a large formal gathering for social dancing

    :  a very pleasant experience :  a good time


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