Related Clues:

• Brain busting
• Point on bird's back
• Hardback?
• Small bird's tail
• Point to bird's back
• Point to bird's rump
• Rear small bird
• Not smiling back
• Hard - back
• Strict - forbidding
• Stiff - back - not smiling
• Novel by Dickens
• Tough - difficult
• Severe -- back of boat
• Novel featuring Mr Gradgrind