Related Clues:

• Sounds from a 64-Across
• Sound heard 'here' and 'there' on Old MacDonald's farm
• Pigpen grunt
• Ordinary thing to come from a pen?
• Snorts from snouts
• Old fluids in pens which pigs emit
• Gruff noises made by crew member bagging tat
• The sow said what?
• Grunt, seeing old writing material
• Squeal, having zero stuff to write with
• Word that may come from a pen
• Sound from a pig
• Nothing in which to dip quill? Pen's sound!
• Ordinary writing fluid creating noise from pen?
• Snort when there is zero writing material