Gorakh Nath

Gorakshya Balam, Guru-sishya Palam, Sesha Himalam, Sasikhanda bhalam

Kalasya Kalam, Jeeta Janma Jalam, Bandey Jatalam, Jagadabjanalam

Gorakh Nath is also Known as Gorakshya Nath. He is the Yoga power of Lord Shiva, who himself is the whole universe. There are many meanings for the name. First let's separate the name into smaller parts

Go + Rakshya = Gorakshya
The meaning of Go are Cow, Earth (or universe) or the Indriya (Through which person interacts with the outer world also moha or attachment). The meaning of Rakshya is to protect.

The combined meaning becomes as such
The one who protects us from the un-escapable net of moha by protecting the indriyas. When all the individual are protected from misutilizing their bodies, which develops the mind so much that we become able to know all the things in the universe, then the universe is protected as a whole.

He is the teacher of Yoga. Yoga means the re-unification of the soul and the super soul (himself). We cannot write about him due to our inefficiency. One of the slokas is listed below which tells something about him.

Tum Sata-Chita-Aananda Sada Shive, Aagama Nigama Parey
Yoga Pracharana Karana Yuga Yuga, Gorakh Rupa Dharey

You are the super being, Sada Shiva. Farther than the knowledge of Aagama and Nigama.
You come here in the form of Gorakh Nath for preaching Yoga (Knowledge for reunification), time to time.

The full Bhajan is given in the Bhajan segment of the site.

Another sloka describes him as

Gorakshya Balam, Guru Sishya Palam, Sesha Himalam, Sashikhanda Bhalam
Kalasys Kalam, Jeeta Janma Jaalam, Bandey Jatalam, Jagjadabjanalam

Gorakshya Balam - Gorakhnath in the form of child
Gurusishya Palam - The founder of Guru Sishya (student) custom
Sesha Himalam - Who sits on the sesh (king of snakes) or who is very fair coloured like the himalayas
Sashi-Khanda-Bhalam - Moon (Sashi) in crescent phase (khanda) at his forhead (bhalam)
Kalasya-Kalam - Who is is death of the death. or who has won the time
Jeeta Janma Jaalam - Who can win the process of rebirth and death.
Bandey Jatalam - We salute the jatadhari (with jata or long hair on head) gorakh
Jagjadabjanalam - Father of every thing (universe)