What is the meaning of Cornish word a

Please provide the full Cornish word you are asking about. "A" by itself is not a complete word in Cornish.

For example:

* "A-ves" means "good" or "well"

* "An" is the definite article meaning "the"

* "A-dro" means "again" or "back"

Once you provide the full word, I can tell you its meaning.