Briton or British or Britisher?

Briton or British or Britisher, in English.

The English meaning:

• The word British refers to things from Britain. eg: British made things, British people etc.
• A Briton is a single native from Britain.
• Britisher is not used in English.

The American meanings:

• Briton, a pre Anglo Saxon person from Britain.
• British, something from Britain.
• Britisher, a person from Britain.

The English and Americans appear to have different meanings for some words, in each other’s language.