Definition of "Marty"

Marty

proper noun
1. A diminutive of the male given names Martin or Marten.
  Quotations
  'Martin', Martin said.'Marty', she said, smiling at him. He didn't correct her mistake. No one had ever called him Marty before. He liked the way 'Marty' seemed a more entertaining man than he knew himself to be.
  2006, Kate Atkinson, One Good Turn, Black Swan, published 2007, page 248
2. A diminutive of the female given name Martha, or less often, of Martina.