(~s)
1.
If you make a ~ when you are driving or cycling, you turn in a half circle in one movement, so that you are then going in the opposite direction.
N-COUNT
2.
If you describe a change in a politician’s policy, plans, or actions as a ~, you mean that it is a complete change and that they made the change because they were weak or were wrong.
...a humiliating ~ by the Prime Minister.
N-COUNT disapproval