Possible Clues:

• Ruminant's third stomach
• The third stomach of a ruminant animal
• A ruminant’s third stomach
• The muscular third stomach of a ruminant animal
• Third compartment of a ruminant’s stomach
• Arsenic found in old mother cow's stomach
• Cow's third stomach
• Third stomach of a ruminant
• Worthies with a whole bag for rumination
• Order a quantity of money from beastly container!