'Nilesh' means 'the Blue God',
and is one of the alternate names for Vishnu, "The Preserver."
Later, the
name was also used to refer to Shiva, "The Destroyer of
Evil", "The King."
The
name is a combination (sandhi) of two words: Neel ("blue") and
Ish ("Lord" or "God").
Ish or Esh is also a Sanskrit word for head. Hence, the
name can also be interpreted as 'Blue Head,' which refers to Lord Shiva.
Nilesh also refers to a third deity: Krishna. Krishna is also referred to as the Blue God because of the darker skin which is always displayed in pictures and statues in the colour blue.