slub [
slʌb]
slub[ noun ]
soft lump or unevenness in a yarn; either an imperfection or created by design
<noun.attribute>
Slub \Slub\, n. [Etymol. uncertain.]
A roll of wool slightly twisted; a rove; -- called also
{slubbing}.
Slub \Slub\, v. t. [imp. & p. p. {Slubbed}; p. pr. & vb. n.
{Slubbing}.]
To draw out and twist slightly; -- said of slivers of wool.