Source : Webster's Revised Unabridged Dictionary (1913)

Fico \Fi"co\, n.; pl. {Ficoes}. [It., a fig, fr. L. ficus. See
   {Fig}.]
   A fig; an insignificant trifle, no more than the snap of
   one's thumb; a sign of contempt made by the fingers,
   expressing. A fig for you.

         Steal! foh, a fico for the phrase.       --Shak.