Definition of pin noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//pɪn//
    ; NAmE NAmE//pɪn//
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    for fastening/joining
  1. 1  a short thin piece of stiff wire with a sharp point at one end and a round head at the other, used especially for fastening together pieces of cloth when sewing see also bobby pin, drawing pin, hairpin, linchpin, pins and needles, safety pin
  2. jewellery
  3. 2 a short thin piece of stiff wire with a sharp point at one end and an item of decoration at the other, worn as jewellery a diamond pin see also tiepin
  4. 3 (especially North American English) = brooch
  5. badge
  6. 4(especially North American English) a type of badge that is fastened with a pin at the back He supports the group and wears its pin on his lapel.
  7. medical
  8. 5a piece of steel used to support a bone in your body when it has been broken The pin in her spine will have to be changed as she grows.
  9. electrical
  10. 6one of the metal parts that stick out of an electric plug and fit into a socket a 2-pin plug
  11. in games
  12. 7a wooden or plastic object that is shaped like a bottle and that players try to knock down in games such as bowling see also ninepins, tenpin
  13. in golf
  14. 8a stick with a flag on top of it, placed in a hole so that players can see where they are aiming for The ball stopped five feet short of the pin.
  15. legs
  16. 9pins [plural] (informal) a person’s legs He’s not as quick on his pins as he used to be.
  17. on small bomb
  18. 10a small piece of metal on a hand grenade that stops it from exploding and is pulled out just before the hand grenade is thrown
  19. see also linchpin
    Word Originlate Old English pinn, of West Germanic origin; related to Dutch pin ‘pin, peg’, from Latin pinna ‘point, tip, edge’.Extra examples an American flag lapel pin Can I borrow a safety pin? My button’s come off and I need something to hold my shirt closed. Fasten the baby’s nappy with a safety pin. Use pins to keep the patch in place while you sew it on.Idioms (old-fashioned, British English) used to say that you would like to do something, even though you know that it would not be sensible I'd kill him for two pins. For two pins I’d tell her what I really think of her.
    you could hear a pin drop
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    it was extremely quiet The audience was so quiet you could have heard a pin drop.
See the Oxford Advanced American Dictionary entry: pin