A pencil is a handheld instrument used to write and draw, usually on paper. Pencil may also refer to: Pencil (optics), a beam of radiant energy in the form of a narrow cone or cylinder Pencil (mathematics), a family of geometric objects Matrix pencil, a pair of matrices used in a generalized eigenvalue problem Definite pencil, a particular case of matrix pencils Pencil2D, an open-source drawing and animation app Pencil (film), a 2016 Tamil film Apple Pencil, a stylus device released by Apple Inc. See also Pencil detonator Pencil skirt Penciller, a stage in the creation of a comic book Pinsel (disambiguation)