A pin is a device used for fastening objects or material together. Pin or PIN may also refer to: Computers and technology Personal identification number (PIN), to access a secured system PIN pad, a PIN entry device PIN, a former Dutch debit card system An image on Pinterest PIN diode, a semiconductor diode Pin, a short lead in electronics Pinning, the act of attaching a social media post to the top of a page to signify importance To pin an object to another object in interface, such as pinning an application to the taskbar Pin (computer program), a platform for creating analysis tools Awards, brooches, or fasteners Award pin, recognising an achievement Bobby pin or kirby grip or hair grip, a hairpin Clevis pin, a three-piece fastener system Collar pin, for a shirt collar Drawing pin or thumbtack Lapel pin, a small pin worn on clothing Pin-back button, a badge fastened to garments with a safety pin. Safety pin, pin which includes a simple spring mechanism and a clasp Split pin or cotter pin, a fastener Music and film Pin (harp) a Cambodian harp Pin (film), 1988, Canada "Pin", a song by the Yeah Yeah Yeahs, from the album Fever to Tell, 2003 "Pin", a song by Anuel AA, from the album Las Leyendas Nunca Mueren, 2021 The Pin (comedy act), on BBC Radio 4 "The Pin", a song from the Goo Goo Dolls' album Boxes Bridge pin, on a keyboard musical instrument Sports and games Pin (amateur wrestling), holding an opponent down Pin (professional wrestling), wrestling move Pin (bridge), a maneuver in the game of bridge Pin (chess), when a defending chess piece cannot move without exposing a more valuable defending piece Bowling pin, the target of the bowling ball in various bowling games Gabriele Pin (born 1962), Italian footballer Other uses Pin, Haute-Saône, French commune Police Information Notice in the UK Postal code, a series of digits or letters used in a postal address Postal Index Number, postal code of locations in India PIN Group, a German postal company People in Need (Czech Republic), a non-profit, non-governmental organization Paleontological Institute, Russian Academy of Sciences, Moscow, Russia PIN proteins in plants Progressive inflammatory neuropathy, a disease Prostatic intraepithelial neoplasia, an abnormality of prostatic glands Center pin, on railway vehicles Dowel or dowel pin Preferred IUPAC name, a chemical name Abbreviation of Pinxit Half a firkin in English brewery cask