1. a mark or smudge left on a surface by a finger, especially one that shows dirt or oil

Examples

• The window was covered in fingermarks from the children playing outside.
• She wiped away the fingermarks on the glass door.
• The detective examined the fingermarks on the weapon.
• Fingermarks on the mirror showed where someone had touched it.
• I need to clean these fingermarks off the refrigerator.
• The white paint was ruined by fingermarks and dust.