spicule

noun7

1. •
   A sharp, needle-like piece.
2. •
   A tiny glass flake formed during the manufacture of glass vials.
3. •
   Any of many needle-like crystalline structures that provide skeletal support in marine invertebrates like sponges.
4. •
   A needle-like mating structure found only in male nematodes.
5. •
   A jet of matter ejected from the photosphere of the sun.
6. •
   A small spike of flowers.
7. •
   (historical) A unit of mass equal to 125 pounds.