hiddenmarker
nounUK /ˈhɪdən ˈmɑːkə/
US /ˈhɪdən ˈmɑːrkər/
A hidden marker is a secret sign that helps you find something.
The treasure map showed a hidden marker behind the old tree.
OTHER MEANINGS
2. A special pen mark that only shows up under special light.
The teacher used a hidden marker to check our homework.
3. A secret point on a computer screen that you can click to find something.
Click the hidden marker to open the surprise game.
4. A quiet sign in a game that shows where to go next.
We found the hidden marker and won the scavenger hunt.