Piacle
Pronunciation : Pi"a*cle
Part of Speech : n.
Etymology : [L. piaculum a propitiatory sacrifice, that which requires expiation, a wicked action, fr. piare to appease, to expiate, pius pious.]
Definition : Defn: A heinous offense which requires expiation. [R.] Howell.
Source : Webster's Unabridged Dictionary, 1913