Rasish is a mutation of the names Ramesh and Shashi. So, far only one person in the universe possesses this name. If searched under google, google misunderstands the name for an incorrect spelling of "radish." The origins of the name come somewhere from the Hindu Kush arean. There is no Sanskrit or spoken language definition for it.
One day, Rasish tried to look up the meaning of his name and found that it was just a mutation of the names Ramesh and Shashi.