A very small twist of flax, wool, cotton, silk or other fibrous substance, drawn out to considerable length.

The filament of a flower.

The filament of any fibrous substance, as of bark.

A fine filament or line of gold or silver.

Air-threads, the fine white filaments which are seen floating in the air in summer, the production of spiders.

Something continued in a long course or tenor; as the thread of a discourse.

The prominent spiral part of a screw.

To pass a thread through the eye; as, to thread a needle.

To pass or pierce through, as a narrow way or channel. They would not thread the gates, Heavy trading ships--threading the Bosporus.