1. (noun)slur (music) a curved line spanning notes that are to be played legato
2. (noun)aspersion, slur a disparaging remark "in the 19th century any reference to female sexuality was considered a vile aspersion"; "it is difficult for a woman to understand a man's sensitivity to any slur on his virility"
3. (verb)smudge, spot, blot, daub, smear, smirch, slur a blemish made by dirt "he had a smudge on his cheek"
4. (verb)slur play smoothly or legato "the pianist slurred the most beautiful passage in the sonata"
5. (verb)slur speak disparagingly of; e.g., make a racial slur "your comments are slurring your co-workers"
6. (verb)slur utter indistinctly
7. (verb)blur, dim, slur become vague or indistinct "The distinction between the two theories blurred"
Definition of 'slur'
Webster Dictionary
1. (noun)slur a mark or stain; hence, a slight reproach or disgrace; a stigma; a reproachful intimation; an innuendo
2. (noun)slur a trick played upon a person; an imposition
3. (noun)slur a mark, thus [/ 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
4. (noun)slur in knitting machines, a contrivance for depressing the sinkers successively by passing over them
5. (verb)slur to soil; to sully; to contaminate; to disgrace
6. (verb)slur to disparage; to traduce
7. (verb)slur to cover over; to disguise; to conceal; to pass over lightly or with little notice
8. (verb)slur to cheat, as by sliding a die; to trick
9. (verb)slur to pronounce indistinctly; as, to slur syllables
10. (verb)slur to sing or perform in a smooth, gliding style; to connect smoothly in performing, as several notes or tones
Definitions of slur 
