The term 'Revenuers, for short' is a reference to federal agents who enforce the laws and regulations of the United States Internal Revenue Service (IRS). The two most common abbreviations for these agents are 'FEDS' and 'Tmen'. FEDS stands for Federal Enforcement Officers, while Tmen stands for Tax Men. These agents are responsible for collecting taxes, investigating tax fraud, and enforcing the laws of the IRS.