Related Clues:

• Dirt road impediment
• Hard to get out of this type of trench
• Boring routine is covered up inside, if truth be told
• Learning method using memorization
• Stage line?
• Treadmill, so to speak
• Learning routine
• Robotic memorization
• Class drudgery
• Dirt road hazard
• Sign of a well-worn trail
• Wallpaper pattern, say
• It's an idea to turn up healthy to the doctor
• Hard thing to get out of
• Learning with flashcards, say