A bribe to a politician or other formidable person can also be called a "sop to" this watchdog of Hades
[DOC] [TLE] Recent Belize News, 5/11/2015 to 5/20/2015, BelizeNews.com [PAR] The event was also held in other areas across the country such as Belize City, 
Sarteneja ... Development banks and potential financing partners will also be 
invited to .... As we told you last night, BSI security called police telling them that 
they ...... term a sop to Cerberus, meaning a concession or bribe to conciliate a 
person... [DOC] [TLE] Book of Idioms From A to Z | IT - ADMIN Thi LQ - Academia.edu [PAR] The next two idioms are also based on this meaning of ace.