Related Clues:
- A red wine one is hard to get out
- Post-Thanksgiving tablecloth problem
- Shout target
- Result of grass rubbing off on you
- Undesirable spot
- Lava lamp lump
- Sight on the sheets at a motel room you probably want to get a refund on
- Scotland's own, following St Mark
- Mark found at the bar with old books
- Mark's short visit home
- Rorschach test element
- Amoebic mass
- Globule; round spot
- Problem on a record
- 1950s sci-fi terror, with 'the'