One of the fine hairs along an insect's wing.
An eyelash.
A short microscopic hairlike organelle projecting from a eukaryotic cell (such as a unicellular organism or one cell of a multicelled organism) which serve either for propulsion by causing currents in the surrounding fluid or as sensors.
Hairs or similar protrusions along the margin of an organ.
The stalk of a flower stamen, supporting the anther.
A continuous object, limited in length only by its spool, and not cut to length.
A fine thread or wire.
Such a wire, as can be heated until it glows, in an incandescent light bulb or a thermionic valve.
A massive, thread-like structure, such as those gaseous ones which extend outward from the surface of the sun, or such as those (much larger) ones which form the boundaries between large voids in the universe.