Related Clues:

• Track impediment
• Popular bar in the morning?
• This can be monotonous
• Tiresome routine
• Wagon wheel groove
• It's hard to get out of
• Deep groove
• Monotonous practice
• Tiresome grind
• Concavity
• Long groove
• Endless 9-to-5 job, e.g.
• Button on many a radio
• Track in the ground
• It's boring to be in one