Here's a breakdown:
* अमर (Amar) means "immortal" or "eternal".
* नाथ (Nath) is a title often used for a spiritual master or a deity.
Therefore, "Amarnath" literally translates to "Immortal Lord" or "Eternal Lord".
This name is associated with the famous Amarnath cave shrine in Jammu and Kashmir, India, which is dedicated to Lord Shiva.