bagman

Short definition from Wiktionary

Noun

1. 1
   A person who collects, transports, or distributes illicit money, especially for the purpose of bribery, extortion, or the making of other improper payments.
2. 2
   A caddy.
3. 3
   A staff assistant to a senior police officer (such as a Detective Sergeant for a Detective Inspector).
4. 4
   A secretary of (and keeper of equipment for) a Morris dancing side.
5. 5
   A bookmaker.
6. 6
   A tramp, hobo.
7. 7
   A travelling salesman.
8. 8
   An officer assigned to travel with the president and carry the "nuclear football".
9. 9
   A prominent fundraiser for a political party or similar cause.