Related Clues:

• Millstone
• Disagreeable duty
• ___ probandi (burden of proof)
• Great weight
• Culpability
• Albatross, symbolically
• Tedious task
• The world, to Atlas
• Difficult burden
• Heavy responsibility
• Liability
• Impeding burden
• Heavy burden
• ''The Rime of the Ancient Mariner'' bird
• Big burden