1. A native oxide of tin, found in Cornwall.

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

• finstone,
• ginstone,
• yinstone,
• 6instone,
• 5instone,
• tjnstone,
• tknstone,
• tonstone,
• t9nstone,
• t8nstone,
• timstone,
• tijstone,
• tihstone,
• tinatone,
• tinstojne,
• tintone,
• tinston,
• tinstonne,
• Tinstona,
• Tinsten

The plural of the "Tinstone" can be the "tinstones".

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