reversesign
nounUK /rɪˈvɜːs saɪn/
US /rɪˈvɜːrs saɪn/
A sign that points the opposite way from what you expect.
The reversesign on the road sent us back the way we came.
OTHER MEANINGS
2. A symbol that means the reverse of its usual meaning.
In this code, the reversesign turns a plus into a minus.
3. A traffic marker showing that a road goes the other way.
Drivers slowed down when they saw the reversesign near the bridge.
4. A change in a sign's meaning caused by turning it around.
The reversesign made the old exit sign point to the new parking lot.