The sharp edge of the blade of a knife or other cutting tool.
The forefront, or position of greatest advancement in some field.
A sharp, needle-like piece.
A needle-like mating structure found only in male nematodes.
A tiny glass flake formed during the manufacture of glass vials
A small spike of flowers.
A jet of matter ejected from the photosphere of the sun.
Any of many needle-like crystalline structures that provide skeletal support in marine invertebrates like sponges.