Slub (?), n. [Etymol. uncertain.]
A roll of wool slightly twisted; a rove; -- called also slubbing.
© Webster 1913.
Slub, v. t. [imp. & p. p. Slubbed (?); p. pr. & vb. n. Slubbing.]
To draw out and twist slightly; -- said of slivers of wool.
© Webster 1913.