Also see definition of "Piacle" in Bible Study Dictionaries
Word Study
Piacle
CIDE DICTIONARY
Piacle, n. [L. piaculum a propitiatory sacrifice, that which requires expiation, a wicked action, fr. piare to appease, to expiate, pius pious.].
A heinous offense which requires expiation. Howell. [1913 Webster]
Also see definition of "Piacle" in Bible Study Dictionaries
For further exploring for "Piacle" in Webster Dictionary Online