Related Clues:

• One chained to a desk
• Farm shelter
• Messy pen
• Hoggery
• Joint
• Pocket protector item
• Eyelid inflammation
• See 11-Across
• Squalid digs
• Writing implement
• Put down, in a way
• Pen full of oink
• Sow's pen
• Mud flat
• Ballpoint, e.g.