Bottleholder

Bot·tle·hold·er

Bottleholder

n.
  1. One who attends a pugilist in a prize fight; -- so called from the bottle of water of which he has charge.
  2. One who assists or supports another in a contest; an abettor; a backer. [Colloq.]
    Lord Palmerston considered himself the bottleholder of oppressed states.