'Slub' definitions:

Definition of 'slub'

From: WordNet
noun
Soft lump or unevenness in a yarn; either an imperfection or created by design [syn: slub, knot, burl]

Definition of 'Slub'

From: GCIDE
  • Slub \Slub\, n. [Etymol. uncertain.] A roll of wool slightly twisted; a rove; -- called also slubbing. [1913 Webster]

Definition of 'Slub'

From: GCIDE
  • Slub \Slub\, v. t. [imp. & p. p. Slubbed; p. pr. & vb. n. Slubbing.] To draw out and twist slightly; -- said of slivers of wool. [1913 Webster]