Related Clues:

• Work really hard
• Labour
• They cause 1 across in glass, by the sound of it
• This will work if you lubricate the end of it
• Given some lubrication at last, this will work
• Diligent efforts
• Irritants
• "Double, double ___ and trouble ..."
• "Bubble, bubble, ___ and trouble ..."
• Work up a sweat
• See 14
• See 12
• One among many getting up to work
• Labour's struggle
• Hard work — work hard