v.1. To occupy a seat as a member of some body of officials: The president of the company sits on the board of directors.
2. To confer about something: The committee will sit on the matter tomorrow and make a decision.
3. To affect someone with or as if with a burden: Our financial troubles sat heavily on my parents.
4. To suppress or repress something: The attorney suspected the prosecution of sitting on evidence that could help her client.
5. To postpone action or resolution regarding something: I'm going to sit on the proposal until I have more information. The company is sitting on $500 million in cash, and everyone is wondering what they'll do with it.