A writing instrument consisting of a thin stick of graphite or a similar substance enclosed in a long thin piece of wood or a mechanical holder. She used a pencil to sketch the outline of her drawing.
A cosmetic implement in the form of a slim stick used for applying colour to the eyebrows, eyelids, lips, etc. She filled in her eyebrows with a brow pencil.
A set of lines or rays that converge at a point. The architect drew a pencil of lines to illustrate the perspective of the building.