marker
//ˈmɑːrkər//
Noun
markerSingular
markersPlural
1
A pen with a broad felt tip, used for writing or drawing.
I used a yellow marker to highlight the important parts of the text.
2
An object or sign used to indicate a position, place, or route.
We placed a marker at the start of the hiking trail.
3
A person or thing that marks something.
The red flag serves as a marker for the finish line.
4
A characteristic or feature that identifies something.
High blood pressure is a marker of heart disease risk.