Related Clues:

• "Phooey!"
• Gunky stuff
• "Drat!"
• Filthy stuff
• Filthy incrustation
• Filthy deposit
• Scum
• Gunky buildup
• Heavy, sticky snow, to skiers
• Icky buildup
• Coating of filth
• 'Dang it!'
• Junky stuff
• 'Oh, phooey!'
• Caked deposit