Source : Webster's Revised Unabridged Dictionary (1913)

Effigy \Ef"fi*gy\, n.; pl. {Effigies}. [L. effigies, fr.
   effingere to form, fashion; ex + fingere to form, shape,
   devise. See {Feign}.]
   The image, likeness, or representation of a person, whether a
   full figure, or a part; an imitative figure; -- commonly
   applied to sculptured likenesses, as those on monuments, or
   to those of the heads of princes on coins and medals,
   sometimes applied to portraits.

   {To burn}, or {To hang}, {in effigy}, to burn or to hang an
      image or picture of a person, as a token of public odium.