To smear; soil by smearing with something; sully; contaminate; pollute; tarnish: often with over.To disparage by insinuation or innuendo; depreciate; calumniate; traduce; asperse; speak slightingly of.To pass lightly (over or through); treat lightly or slightingly; make little of: commonly with over.To cheat, originally by slipping or sliding a die in a particular way: an old gambling term; hence, to trick or cheat in general.To do (anything) in a careless manner; render obscure or indistinct by running together, as words in speaking.6, In music, to sing (two or more tones) to a single syllable, or perform in a legato manner. See slur, n., 4.In printing, to blur or double, as an impression from type; mackle.To slide; be moved or dragged along in a shuffling, negligent way.To practise cheating by slipping a die out of the box so as not to let it turn; hence, to cheat in any way.In music, to apply a slur to two or more notes.n. A mark or stain; a smear; hence, figuratively, a slight occasion of reproach.n. A disparaging or slighting remark; an insinuation; an innuendo: as, he could never speak of him without a slur.n. A trick; a cheat. See slur, intransitive verb, 2.n. In vocal music, the combination of two or more tones of the music sung to a single syllable.n. In musical notation, a curved mark connecting two or more notes that are to be performed to a single syllable, or without break.n. . A slide or glide.n. In printing, a blurred or doubled impression caused by a shake or uneven motion in the sheet.n. In a knitting-machine, mechanism which travels on a bar called the slur-bar, and depresses the jack-sinkers in succession, sinking a loop of thread between every pair of needles.n. Mud; especially, thin, washy mud.