Related Clues:

• Slingshot or divining rod
• Inferior mark
• Ruby in the movies
• Not a good mark
• Near-failing mark
• Maryland oak
• "What's Happening!!" daughter
• Twisted Sister frontman Snider
• 'It's Always Sunny in Philadelphia' role
• "It's Always Sunny in Philadelphia" role
• Report card bummer
• It concludes ''Edwin Drood''
• Unenviable mark
• Tapered end
• Passing grade, barely