[n] a blemish made by dirt; "he had a smudge on his cheek"
[n] a disparaging remark
[n] (music) a curved line spanning notes that are to be played legato
[v] become vague or indistinct; "The distinction between the two theories blurred"
[v] utter indistinctly
[v] speak disparagingly of; e.g., make a racial slur; "your comments are slurring your co-workers"
[v] play smoothly or legato; of musical passages