<p><strong>Verb</strong></p><ul><li>(used with object)</li><li>slubbed, slub·bing.</li><li>to extend (slivers of fiber) and twist slightly in carding.</li></ul><p><strong>Noun</strong></p><ul><li>the fibers produced by slubbing.</li><li>a slight irregularity in yarn produced either accidentally or purposely by knotting or twisting or by including uneven lengths of fiber in spinning.</li></ul>