Related Clues:

• Relentless nine-to-five gig, e.g.
• Cause of a bump in the road
• Marshy land
• Wagon wheel depression
• Road to nowhere, metaphorically
• Plow furrow
• Wagon wheel track
• What grading will get rid of
• Giving ground?
• Mind-numbing routine
• Cart track, e.g.
• Muck and ___
• Plowing problem
• Muddy stuff
• Wearisome routine