What does una nostro vostro esta mean in English?

Answer 1

Not a lot! It's four unconnected words.

una = 'a' (feminine)

nostro ('nuestro' in Spanish) = 'our(s)' (masculine)

vostro ('vuestro' in Spanish) = 'your(s)' (informal, plural, masculine)

esta = this (feminine), but if it has an accent over the 'a', it means 'is'.