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safety pin

A safety pin is a small, sharp, metal fastener with a clasp on one end that protects you from getting poked. If you lose a button on your shirt, you can secure it with a safety pin.

Safety pins get their name from the fact that they're safer than straight pins. A spring mechanism allows a safety pin to form a closed loop with a covered point. You can pin up your hem or pin a name tag on your t-shirt without fear of being jabbed. Safety pins were invented in the 1840s and have remained popular; in the 1970s and 80s, clothing decorated with dozens of safety pins was a hallmark of punk rock fashion.

Definitions of safety pin
  1. noun
    a pin in the form of a clasp; has a guard so the point of the pin will not stick the user
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    type of:
    pin
    a small slender (often pointed) piece of wood or metal used to support or fasten or attach things
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