What does "slur" mean?

Additional senses

1. 2.To cover over; to disguise; to conceal; to pass over lightly or with little notice. With periods, points, and tropes, he slurs his crimes. Dryden.
2. 3.To cheat, as by sliding a die; to trick. [R.] To slur men of what they fought for. Hudibras.
3. 4.To pronounce indistinctly; as, to slur syllables.
4. 5.(Mus.) To sing or perform in a smooth, gliding style; to connect smoothly in performing, as several notes or tones. Busby.
5. 6.(Print.) To blur or double, as an impression from type; to mackle.
6. 7.A mark or stain; hence, a slight reproach or disgrace; a stigma; a reproachful intimation; an innuendo. "Gaining to his name a lasting slur." South.
7. 8.A trick played upon a person; an imposition. [R.]
8. 9.(Mus.) A mark, thus [&upslur; or ], connecting notes that are to be sung to the same syllable, or made in one continued breath of a wind instrument, or with one stroke of a bow; a tie; a sign of legato.
9. 10.In knitting machines, a contrivance for depressing the sinkers successively by passing over them.