thread

noun

1.
a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving
knittle yarn
Derived from:
thread
2.
any long object resembling a thin line
ribbon
Derived from:
thread thready
3.
the connections that link the various parts of an event or argument together
thoughtline train of thought
4.
the raised helical rib going around a screw
screw thread