Definition & Meaning of "i'n"in English

What does "to i'n" mean in British dialectal slang?

The structure is a contraction of "isn't," formed by dropping the "s" and the second "n," resulting in "i'n." It is used in certain British dialects, particularly in the West Country (Somerset, Devon, Cornwall) and parts of rural England, as a negative contraction of "isn't" or sometimes "ain't." People typically say "He i'n coming today" or "That i'n right, is it?"