needle

A fine, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections, etc.

"The seamstress threaded the needle to sew on a button."

Any slender, pointed object resembling a needle, such as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc.

A fine measurement indicator on a dial or graph, e.g. a compass needle.

"The needle on the fuel gauge pointed to empty."

To pierce with a needle, especially for sewing or acupuncture.

To tease in order to provoke; to poke fun at.

"Billy needled his sister incessantly about her pimples."

To form, or be formed, in the shape of a needle.

"to needle crystals"