1. A kind of fossil encrinite.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• captone,
• capiton,
• capton,
• captine,
• capston,
• cstone,
• capone,
• capatone,
• capstome,
• capstons,
• capestone,
• capstones,
• capstoen,
• cappstone,
• capstonne,
• capstonee,
• cesstode,
• clastone,
• ierestone,
• capilose

• capstan.

The adjective form of the word "capstone" is "capstoned".

The plural of the "capstone" can be the "capstones".

The singular of the "capstone" can be the "capstone".