Related Clues:
- Pool table topper
- Trilby material
- Was pretty sure
- Kind of map or code
- Part of a billiard table
- In pencil, for example
- Subject to being wiped out
- Like hereditary factors
- Like blackboards
- Kind of fingerprint or code
- Blackboard eraser material
- Pool surface
- Pool-table surface material
- Pool table cloth
- Sensed somehow