namam no. 304) mahaaSanah (महाशनः) (మహాశనః)

aum mahaaSanaaya namah (ओं महाशनाय नमः) (ఓం మహాశనాయ నమః)

He is called (mahaa + aaSana) mahaaSanah as He took into Him through His mouth the entire universe at the time of the great disaster (pralayam). 

In His krishnavatar, the little Krishna swallowed in a moment the huge mountain-like heap of rice that the people of gokul kept for Indra. It is well known after that Indra getting angry and raining stones on gokul and Krishna lifting the govradhan mountain.

aum namo bhagavate vasudevaya!

PS: For the meanings of the other namams published earlier on this blog, please find them at the link given below:

http://value4value.blogspot.in/search/label/Vishnu%20Sahasra%20Nama%20Stotram