A smear, smudge or blot
Something that appears hazy or indistinct
To cause imperfection of vision in; to dim; to darken.
To become indistinct.
To transfer the input focus away from.
To smear, stain or smudge.
To make indistinct or hazy, to obscure or dim.
In a state of doubt or confusion.
Waste or impure matter.
Worthless or trivial matter.
The impurities in metal.
Residue that forms on the surface of molten metal from oxidation.
A waste product from working with metal.
To remove dross from.