organ donor

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organ donor (plural organ donors)

1. A person (living or dead) from whom an organ is removed in order to be transplanted into another person.
2. (chiefly US, slang) A motorcyclist, especially one who does not wear a protective helmet.
   • 2006, Bill Lankhof, Head Case, Slam! Sports (Canada), 14 Jun. (retrieved 21 Aug. 2008),

     Wearing a motorcycle helmet is optional in Pennsylvania, but that's no reason for Ben Roethlisberger to go out and practise his organ donor technique.

• organ donation

• blood donor