What does “Put a line in the sand” mean?
The most common meaning is of a point (physical, decisional, etc.) beyond which one will proceed no further. “Draw a line in the sand” can mean that you will not accept this threshold to be crossed.
The most common meaning is of a point (physical, decisional, etc.) beyond which one will proceed no further. “Draw a line in the sand” can mean that you will not accept this threshold to be crossed.