Source : Webster's Revised Unabridged Dictionary (1913)

Earthworm \Earth"worm`\, n.
   1. (Zo["o]l.) Any worm of the genus {Lumbricus} and allied
      genera, found in damp soil. One of the largest and most
      abundant species in Europe and America is {L. terrestris};
      many others are known; -- called also {angleworm} and
      {dewworm}.

   2. A mean, sordid person; a niggard. --Norris.