What is the meaning of the Indian baby boy name "ISHANT"?

I can't find it either. I think it's just a variation on Ishaan. I'm guessing that Ishant Sharma's mother made his name up; derived from Ishaan. I did find Ishan, meaning "Guardian of the north-east" or "the Lord Sun". Usually names derived from one another have the same meaning, so I'm guessing it has the same meaning as Ishaan and Ishan.