smudge

US /smʌdʒ/
UK /smʌdʒ/
"smudge" picture
1.

a blurred or smeared mark on a surface

:
There's a dirty smudge on the window.
She wiped away the ink smudge from the paper.
1.

to cause something to become messy or blurred by rubbing it

:
Be careful not to smudge the wet paint.
Her tears began to smudge her mascara.