bagman

noun

1. (Australia, New-Zealand, US, informal)A person who collects, transports, or distributes illicit money, especially for the purpose of bribery, extortion, or the making of other improper payments.

   “The accused are only the latest in a string of alleged bagmen, vote-riggers and ward-heelers charged with wrongdoing.”

   “You're going to pick up seven million dollars of cartel money? […] Jimmy, you are an attorney, not a bagman.”

2. A caddy.
3. (British, dated)A staff assistant to a senior police officer (such as a Detective Sergeant for a Detective Inspector).
4. (British)A secretary of (and keeper of equipment for) a Morris dancing side.
5. (Australia, slang)A bookmaker.
6. (Australia, dated, slang)A tramp, hobo.
7. (UK, dated, slang)A travelling salesman.
8. (US, slang)An officer assigned to travel with the president and carry the "nuclear football".

   “[…] in a locked metal suitcase carried on the President's travels by a warrant officer irreverently known as "the bagman."”

   “The bagman clutching the nuclear football like an undertaker at a wedding. Cameras flashed and clicked, recording the scene. 'Good morning, Mr President,' they chorused.”

9. (Canada, informal)A prominent fundraiser for a political party or similar cause.

   “2016, David Akin, "Tory 'bagman' boasts about party's bank account, Toronto Sun, 28 May, Proud to call himself the "bagman" of the Conservative Party, former senator Irving Gerstein boasted about the financial health of his party Friday.”