Related Clues:

• Groove it's hard to get out of
• Dull grind
• Someone may be stuck in one
• Humdrum existence
• Humdrum habit
• It's regrettable for a routine or a road
• Rugby match in the centre creates furrow
• Relentless grind
• Bored worker's routine
• Tiresome practice
• Furrow in a track
• Dirt road furrow
• Routine that's hard to get out of
• Predictable pattern in regular letters from Proust
• Tire groove