English is the language which originated in England. Hence the name, "English". It's the language of English people.

American, or American English, is spoken in the United States.

On a website about English, English spellings and meanings should be given primacy.

If the website is about spelling and meanings applied in the US it should be shown as such.

There is "English" and there is "American English".

There is not "English" and "British English".