What is "sleave silk"

Sleave \Sleave\ (sl[=e]v), n. [Cf. Dan. sl["o]if, a knot loop, Sw. slejf, G. schleife a knot, sliding knot, and E. slip, v.i.]

1. The knotted or entangled part of silk or thread.

2. Silk not yet twisted; floss; -- called also sleave silk.

   Sleep that knits up the ravell'd sleave of care.
   --Shak.