Definition
It is someone's turn to do something; often making a decision.
Origins
From tennis, as when the ball is in someone's court it is their turn to play.
In Context
- "Well there's not much more I can do, so the ball is in your court now."
- "Achieving that partnership will require leadership and flexibility. Not just from us, but from our friends, the 27 nations of the EU. And as we look forward to the next stage, the ball is in their court, but I am optimistic it will receive a positive response."