(~s, smudging, ~d)
1.
A ~ is a dirty mark.
There was a dark ~ on his forehead.
...~s of blood.
N-COUNT
2.
If you ~ a substance such as ink, paint, or make-up that has been put on a surface, you make it less neat by touching or rubbing it.
Smudge the outline using a cotton-wool bud...
Her lipstick was ~d.
VERB: V n, V-ed
3.
If you ~ a surface, you make it dirty by touching it and leaving a substance on it.
She kissed me, careful not to ~ me with her fresh lipstick...
VERB: V n