Related Clues:
- Raw material in glass production
- Smooths in woodworking
- Makeup of castles by the sea
- The stuff of ocean liners
- Rub down with a bit of spit to begin with
- Temporary castle material
- Something brought home unintentionally from the beach
- Smooths, as a board
- Material used to make glass and silicon
- Golfers don't want to go into it
- Take the edge off, in a way
- Surface for beach volleyball
- It's found at the beach
- Smooth in a woodshop
- Grains that aren't part of a healthy diet