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Pin (device), device used for fastening objects or material together

Brooch, a decorative item fastened on apparels

Badge or button, a small (usually round) piece of metal or plastic with a pin attached, usually worn on clothing

Award pin, a small piece of metal or plastic with a pin attached given as an award for some achievement

An electric interconnection, in electronics. For example a metal wire coming out of an integrated circuit or transistor

Bridge pin, a vertical wire on the bridge of keyboard instruments such as the piano and harpsichord that is used to control the string resonances

Pin, Haute-Saône, a commune of the Haute-Saône département, in France

Pin..., a 1988 cult horror movie *

Pin (song), a song by the Yeah Yeah Yeahs from their debut album, Fever to Tell (2003).

Pin (chess), a scenario where if a lesser piece is under attack and moves away, it would reveal a more valuable piece

Pin (wrestling), a way of winning a match

Pin (bridge), a manouver to drop an opponent's lower-ranking card by leading a high one.

Grappling hold#Pinning hold, a hold used to control an opponent in grappling

Bowling pins, which must be knocked down by the bowling ball

Personal identification number

Postal Index Number (India)

Personal Internet Name RFC 3043 *

Prostatic intraepithelial neoplasia

PIN diode (p-type, intrinsic, n-type diode), a type of photodiode