- Clue
- Clue given
- Each in turn covered up clue
- Helpful Suggestion
- Indirect suggestion
- Inkling
- Intimation
- A hint
- Extra amount
- Extremity
- Gratuity
- Helpful hint
- Helpful suggestion regarding gratuity
- Hint
- A shaft
- Archer’s shaft
- Archery missile
- Bow and ...
- Bow missile
- Bowman’s missile
- Direction indicator
- A guide to a solution
- A hint
- Aid in solving a crime
- Aid to detection
- Crime-solving aid
- Crime-solving lead
- Crossword poser
- Alphabetical key in a book
- Alphabetical list
- Back of book feature
- Book guide for some whirlwind exploration
- Guiding principle
- List of contents
- Look-up guide