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A pencil is a handheld instrument used to write and draw, usually on paper. Pencil may also refer to: * paintbrush, as ''pencil'' was a name for this brushes now obsolete * 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 * Pencil2D, an open-source drawing and animation app * ''Pencil'' (film), an upcoming Tamil film * Apple Pencil, a stylus device released by Apple Inc. ==See also== * Pencil detonator * Pencil skirt 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pencil (disambiguation)」の詳細全文を読む スポンサード リンク
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