Related Clues:

• Polish by friction
• 'Ay, there's the -' (Hamlet)
• Difficulty with stone not unknown
• Ointment; copy (a brass)
• Ay, there's the —
• Polish food no good
• Work in trouble
• Ointment for skin
• Central difficulty
• Apply pressure and friction
• Difficulty ends card session half way through
• Difficulty cutting gem
• Rus in urbe? Not quite: clearing ugly ruins is the difficulty
• Numb bottom following half-hour back massage
• First thing for batsman after game is massage