Bhola means the person who keeps on forgetting. Nath means king. Therefore "Bholanath" means king of forgetful persons.
This nickname is given to him as Lord Shiva does not understand any politics. He does work on his own will. Never ever takes order from anyone.
And also he always forget what Parvati (his wife) asked him to do or not to do. These are the reason we call him "BHOLANATH".
|| Om Namah Shivay ||