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pin [ˈpɪn]

1 pin noun
  • a thin, pointed piece of stiff wire with a rounded head at one end that is used especially for fastening pieces of cloth
  • a thin, pointed piece of stiff wire with a decoration at one end
  • brooch

2 pin verb
  • to fasten or attach (something) with a pin
  • to prevent or stop (someone or something) from moving by holding or pressing firmly against something —sometimes used figuratively

3 pin abbreviation
  • personal identification number