slubbing
  頭道粗紡
  Slub, v. t. [imp. & p. p. Slubbed p. pr. & vb. n. Slubbing.] To draw out and twist slightly; -- said of slivers of wool.
  ◄ ►
  Slub·bing a. & n. from Slub.
  Slubbing billy, or Slubbing machine, the machine by which slubs are formed.
  ◄ ►