guidemark
nounUK /ˈɡaɪd.mɑːk/
US /ˈɡaɪd.mɑːrk/
A guidemark is a special sign that helps you know where to go.
The bright red guidemark on the tree showed us the way back to camp.
OTHER MEANINGS
2. A visible feature used to help find or follow a route.
The old tower was a useful guidemark for sailors coming into the harbor.
3. A standard or rule that helps someone make decisions.
Honesty was the guidemark of everything she did.
4. A printed symbol on a page that helps readers find information.
The small guidemark in the corner told us which chapter we were in.