Definition of "degen"

degen¹

/ˈdeɪɡən/

noun
plural degens
1. (obsolete, UK, thieves' cant) Sword.
  Quotations
  "Crash the cull—down with him—down with him before he dubs the jigger. Tip him the degen, Fib, fake him through and through; if he pikes we shall all be scragged."
  1828, Edward Bulwer-Lytton, chapter XXVIII, in Pelham: or The Adventures of a Gentleman‎, volume 1, New York: J. & J. Harper, page 228

degen²

/ˈdiːd͡ʒɛn/

noun
plural degens
1. (Internet slang) Degenerate.