from
The Collaborative International Dictionary of English v.0.48
Thrown \Thrown\ (thr[=o]n),
a. & p. p. from {Throw}, v.
[1913 Webster]
{Thrown silk}, silk thread consisting of two or more singles
twisted together like a rope, in a direction contrary to
that in which the singles of which it is composed are
twisted. --M'Culloch.
{Thrown singles}, silk thread or cord made by three processes
of twisting, first into singles, two or more of which are
twisted together making dumb singles, and several of these
twisted together to make thrown singles.
[1913 Webster]