1. writing instruments with felt tips used for drawing or writing
2. objects used to indicate position, boundaries, or important locations
3. distinctive characteristics or signs that identify something

Examples

• The students used colorful markers to create their posters.
• She bought a new set of permanent markers for the art project.
• Stone markers indicated the boundary between the two properties.
• The trail markers helped hikers stay on the correct path.
• High fever and rash are markers of the disease.
• Genetic markers can help identify inherited conditions.
• He used sticky notes as markers in his textbook.
• The page markers made it easy to find important sections.