stonewall
verbUK /ˈstəʊnwɔːl/
US /ˈstoʊnwɔːl/
To refuse to answer questions or talk about something.
The witness tried to stonewall the reporters outside the court.
OTHER MEANINGS
2. To block or delay something, especially in sports by playing very defensively.
The team decided to stonewall for the last ten minutes to protect their lead.
3. To build a wall out of stone.
They stonewalled the garden to keep the soil from washing away.
4. In cricket, to bat very defensively without trying to score runs.
He stonewalled for an entire session to save the match.