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"
Definitions of 'slur'
Webster 1913 Dictionary
1. (noun)slur a mark or stain; hence, a slightreproach or disgrace; a stigma; a reproachful intimation; an innuendo
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
Definition of slur 
