Related Clues:
- It's for remembering troop leader in rules of engagement initially
- Nine-to-five drudgery, say
- Groovy track?
- Symbol of tiredness
- Pure memorization learning method
- Learning by flashcards, e.g
- Learning by recitation
- Routine that's hard to escape
- Pity endless sex at a stag party?
- Boring groove to be stuck in!
- Humdrum pattern
- Tough thing to be stuck in
- Symbol of boredom
- Wagon-wheel track
- Road groove